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Help with simple project

T
Terry
Wed, Jul 21, 2021 2:52 PM

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in
Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry

I'm improvising a tool from a sawn screwdriver drill. So this little project is to make a cover that I will glue into place. https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 From a 'frontal' photo of the open end I used Trace Bitmap in Inkscape, saved that as an SVG and opened it in OpenSCAD, shown presently at about 10 times its physical size of 41.1 mm long. https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 Q1: Would experienced Inkscape users have used its tools to manually draw the outline, rather than use Trace Bitmap? (I haven't yet got around to practicing that.) Q2: What method do others use for scaling a flat object like this before saving the STL? I'm thinking of using an external tool to measure pixel positions between pairs of points. (Is OpenSCAD ever likely to have such a handy tool itself?) Q3: My first attempt in Inkscape resulted in just the unfilled outline, shown as a width of 1. https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 For future reference, would OpenSCAD have been able to fill it? Q4: Without Inkscape, what method would others have used? I've included the SVG and SCAD. https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 Terry
D
dpa
Wed, Jul 21, 2021 3:16 PM
  • Q1: I would, yers. because tracing the picture makes a lot of
    pointless points and the from is easy to rebuild (using bezier tool,
    shortcut "b")
  • Q2: for me the svg is the same dimension as imported in OpenSCAD. I
    found in your svg file that everything was set to "px". But you have to
    switch to "mm". I guess this is the reason for the strange Dimensions.
    see another video in attachment
  • Q3: there are 2 objects, the black "line" and the red fillin. Normally
    this are two parts of one object (fill and stroke) but in your svg this
    are two objects filled: one filled with black (looking like a line but its
    a filled path), one filled with red. It seems that OpenSCAD used only the
    black one (maybe because of intersections?). For this request you should
    use only one filled object (don't use stroke for filled objects because it
    changes the dimensions).
  • Q4: don't know

Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry terrypingm@gmail.com:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in
Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

- Q1: I would, yers. because tracing the picture makes a lot of pointless points and the from is easy to rebuild (using bezier tool, shortcut "b") - Q2: for me the svg is the same dimension as imported in OpenSCAD. I found in your svg file that everything was set to "px". But you have to switch to "mm". I guess this is the reason for the strange Dimensions. see another video in attachment - Q3: there are 2 objects, the black "line" and the red fillin. Normally this are two parts of one object (fill and stroke) but in your svg this are two objects filled: one filled with black (looking like a line but its a filled path), one filled with red. It seems that OpenSCAD used only the black one (maybe because of intersections?). For this request you should use only one filled object (don't use stroke for filled objects because it changes the dimensions). - Q4: don't know Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry <terrypingm@gmail.com>: > I'm improvising a tool from a sawn screwdriver drill. So this > little project is to make a cover that I will glue into place. > https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 > > From a 'frontal' photo of the open end I used Trace Bitmap in > Inkscape, saved that as an SVG and opened it in OpenSCAD, shown > presently at about 10 times its physical size of 41.1 mm long. > > https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 > > Q1: Would experienced Inkscape users have used its tools to > manually draw the outline, rather than use Trace Bitmap? (I > haven't yet got around to practicing that.) > > Q2: What method do others use for scaling a flat object like this > before saving the STL? I'm thinking of using an external tool to > measure pixel positions between pairs of points. (Is OpenSCAD ever > likely to have such a handy tool itself?) > > Q3: My first attempt in Inkscape resulted in just the unfilled > outline, shown as a width of 1. > > https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 > > For future reference, would OpenSCAD have been able to fill it? > > Q4: Without Inkscape, what method would others have used? > > I've included the SVG and SCAD. > > https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 > > > https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 > > Terry > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >
D
dpa
Wed, Jul 21, 2021 3:25 PM
  • Q1: I would, yers. because tracing the picture makes a lot of
    pointless points and the from is easy to rebuild (using bezier tool,
    shortcut "b")
  • Q2: for me the svg is the same dimension as imported in OpenSCAD. I
    found in your svg file that everything was set to "px". But you have to
    switch to "mm". I guess this is the reason for the strange Dimensions.
    see another video
    https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA
  • Q3: there are 2 objects, the black "line" and the red fillin. Normally
    this are two parts of one object (fill and stroke) but in your svg this
    are two objects filled: one filled with black (looking like a line but its
    a filled path), one filled with red. It seems that OpenSCAD used only the
    black one (maybe because of intersections?). For this request you should
    use only one filled object (don't use stroke for filled objects because it
    changes the dimensions).
  • Q4: don't know

Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry terrypingm@gmail.com:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in
Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

- Q1: I would, yers. because tracing the picture makes a lot of pointless points and the from is easy to rebuild (using bezier tool, shortcut "b") - Q2: for me the svg is the same dimension as imported in OpenSCAD. I found in your svg file that everything was set to "px". But you have to switch to "mm". I guess this is the reason for the strange Dimensions. see another video <https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA> - Q3: there are 2 objects, the black "line" and the red fillin. Normally this are two parts of one object (fill and stroke) but in your svg this are two objects filled: one filled with black (looking like a line but its a filled path), one filled with red. It seems that OpenSCAD used only the black one (maybe because of intersections?). For this request you should use only one filled object (don't use stroke for filled objects because it changes the dimensions). - Q4: don't know Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry <terrypingm@gmail.com>: > I'm improvising a tool from a sawn screwdriver drill. So this > little project is to make a cover that I will glue into place. > https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 > > From a 'frontal' photo of the open end I used Trace Bitmap in > Inkscape, saved that as an SVG and opened it in OpenSCAD, shown > presently at about 10 times its physical size of 41.1 mm long. > > https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 > > Q1: Would experienced Inkscape users have used its tools to > manually draw the outline, rather than use Trace Bitmap? (I > haven't yet got around to practicing that.) > > Q2: What method do others use for scaling a flat object like this > before saving the STL? I'm thinking of using an external tool to > measure pixel positions between pairs of points. (Is OpenSCAD ever > likely to have such a handy tool itself?) > > Q3: My first attempt in Inkscape resulted in just the unfilled > outline, shown as a width of 1. > > https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 > > For future reference, would OpenSCAD have been able to fill it? > > Q4: Without Inkscape, what method would others have used? > > I've included the SVG and SCAD. > > https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 > > > https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 > > Terry > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >
MM
Michael Möller
Wed, Jul 21, 2021 3:36 PM

I would have a completly different approach; assuming this is a oneoff for
personal use, and this is "just" the endcover for the tool shown,
presumably with some axis in the middle.

Tolerances need not be 0.1 mm ... size and fit and glue would make me
choose to measure it with calipers, draw a OpenSCAD shape "rounded
rectangle", possibly scaled if it is "elliptical". I'd only need to be
within a mm or two, oversized, and then I'd file/sandpaper it to fit.

Msquare

ons. 21. jul. 2021 16.52 skrev Terry terrypingm@gmail.com:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in
Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

I would have a completly different approach; assuming this is a oneoff for personal use, and this is "just" the endcover for the tool shown, presumably with some axis in the middle. Tolerances need not be 0.1 mm ... size and fit and glue would make me choose to measure it with calipers, draw a OpenSCAD shape "rounded rectangle", possibly scaled if it is "elliptical". I'd only need to be within a mm or two, oversized, and then I'd file/sandpaper it to fit. Msquare ons. 21. jul. 2021 16.52 skrev Terry <terrypingm@gmail.com>: > I'm improvising a tool from a sawn screwdriver drill. So this > little project is to make a cover that I will glue into place. > https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 > > From a 'frontal' photo of the open end I used Trace Bitmap in > Inkscape, saved that as an SVG and opened it in OpenSCAD, shown > presently at about 10 times its physical size of 41.1 mm long. > > https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 > > Q1: Would experienced Inkscape users have used its tools to > manually draw the outline, rather than use Trace Bitmap? (I > haven't yet got around to practicing that.) > > Q2: What method do others use for scaling a flat object like this > before saving the STL? I'm thinking of using an external tool to > measure pixel positions between pairs of points. (Is OpenSCAD ever > likely to have such a handy tool itself?) > > Q3: My first attempt in Inkscape resulted in just the unfilled > outline, shown as a width of 1. > > https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 > > For future reference, would OpenSCAD have been able to fill it? > > Q4: Without Inkscape, what method would others have used? > > I've included the SVG and SCAD. > > https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 > > > https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 > > Terry > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >
RW
Ray West
Wed, Jul 21, 2021 4:41 PM

Hi Terry,

I've never found any 'auto trace'  in any of the low cost common drawing
packages to work good enough to be useful . For simple shapes, manually
trace it in your drawing program. For this simple shape, I would scan
the cut off end of the drill - hold it on to the flat bed scanner, then
print it out on paper and  cut out the shape. If you haven't a scanner,
then trace around it, (or do a 'brass rubbing' ) and cut out the shape.
Then, build up that shape with overlapping circles,squares, whatever in
openscad. Easy to check if near enough by holding the paper over the
screen. Linear extrude a couple of mm, save stl, and print*. after a few
iterations you'll get it to fit. It looks like a hull between a couple
of circles, so I'm pretty sure Michael's approach would work fine, too.

Never underestimate the power of cad - cardboard aided design.

*You could start by printing to paper, and overlay on the original, if
you think you will be wasting filament. (make sure you get the scaling
right, dpi, etc.

On 21/07/2021 15:52, Terry wrote:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in

Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

Hi Terry, I've never found any 'auto trace'  in any of the low cost common drawing packages to work good enough to be useful . For simple shapes, manually trace it in your drawing program. For this simple shape, I would scan the cut off end of the drill - hold it on to the flat bed scanner, then print it out on paper and  cut out the shape. If you haven't a scanner, then trace around it, (or do a 'brass rubbing' ) and cut out the shape. Then, build up that shape with overlapping circles,squares, whatever in openscad. Easy to check if near enough by holding the paper over the screen. Linear extrude a couple of mm, save stl, and print*. after a few iterations you'll get it to fit. It looks like a hull between a couple of circles, so I'm pretty sure Michael's approach would work fine, too. Never underestimate the power of cad - cardboard aided design. *You could start by printing to paper, and overlay on the original, if you think you will be wasting filament. (make sure you get the scaling right, dpi, etc. On 21/07/2021 15:52, Terry wrote: > I'm improvising a tool from a sawn screwdriver drill. So this > little project is to make a cover that I will glue into place. > https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 > > >From a 'frontal' photo of the open end I used Trace Bitmap in > Inkscape, saved that as an SVG and opened it in OpenSCAD, shown > presently at about 10 times its physical size of 41.1 mm long. > > https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 > > Q1: Would experienced Inkscape users have used its tools to > manually draw the outline, rather than use Trace Bitmap? (I > haven't yet got around to practicing that.) > > Q2: What method do others use for scaling a flat object like this > before saving the STL? I'm thinking of using an external tool to > measure pixel positions between pairs of points. (Is OpenSCAD ever > likely to have such a handy tool itself?) > > Q3: My first attempt in Inkscape resulted in just the unfilled > outline, shown as a width of 1. > > https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 > > For future reference, would OpenSCAD have been able to fill it? > > Q4: Without Inkscape, what method would others have used? > > I've included the SVG and SCAD. > > https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 > > https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 > > Terry > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org
GH
Gene Heskett
Wed, Jul 21, 2021 5:20 PM

On Wednesday 21 July 2021 12:41:13 Ray West wrote:

Hi Terry,

I've never found any 'auto trace'  in any of the low cost common
drawing packages to work good enough to be useful . For simple shapes,
manually trace it in your drawing program. For this simple shape, I
would scan the cut off end of the drill - hold it on to the flat bed
scanner, then print it out on paper and  cut out the shape. If you
haven't a scanner, then trace around it, (or do a 'brass rubbing' )
and cut out the shape. Then, build up that shape with overlapping
circles,squares, whatever in openscad. Easy to check if near enough by
holding the paper over the screen. Linear extrude a couple of mm, save
stl, and print*. after a few iterations you'll get it to fit. It looks
like a hull between a couple of circles, so I'm pretty sure Michael's
approach would work fine, too.

Never underestimate the power of cad - cardboard aided design.

Chuckle. You never cease to amaze or amuse me.

*You could start by printing to paper, and overlay on the original, if
you think you will be wasting filament. (make sure you get the scaling
right, dpi, etc.

On 21/07/2021 15:52, Terry wrote:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in

Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.
scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

Cheers, Gene Heskett

"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.

On Wednesday 21 July 2021 12:41:13 Ray West wrote: > Hi Terry, > > I've never found any 'auto trace'  in any of the low cost common > drawing packages to work good enough to be useful . For simple shapes, > manually trace it in your drawing program. For this simple shape, I > would scan the cut off end of the drill - hold it on to the flat bed > scanner, then print it out on paper and  cut out the shape. If you > haven't a scanner, then trace around it, (or do a 'brass rubbing' ) > and cut out the shape. Then, build up that shape with overlapping > circles,squares, whatever in openscad. Easy to check if near enough by > holding the paper over the screen. Linear extrude a couple of mm, save > stl, and print*. after a few iterations you'll get it to fit. It looks > like a hull between a couple of circles, so I'm pretty sure Michael's > approach would work fine, too. > > Never underestimate the power of cad - cardboard aided design. Chuckle. You never cease to amaze or amuse me. > *You could start by printing to paper, and overlay on the original, if > you think you will be wasting filament. (make sure you get the scaling > right, dpi, etc. > > On 21/07/2021 15:52, Terry wrote: > > I'm improvising a tool from a sawn screwdriver drill. So this > > little project is to make a cover that I will glue into place. > > https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 > > > > >From a 'frontal' photo of the open end I used Trace Bitmap in > > > > Inkscape, saved that as an SVG and opened it in OpenSCAD, shown > > presently at about 10 times its physical size of 41.1 mm long. > > > > https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 > > > > Q1: Would experienced Inkscape users have used its tools to > > manually draw the outline, rather than use Trace Bitmap? (I > > haven't yet got around to practicing that.) > > > > Q2: What method do others use for scaling a flat object like this > > before saving the STL? I'm thinking of using an external tool to > > measure pixel positions between pairs of points. (Is OpenSCAD ever > > likely to have such a handy tool itself?) > > > > Q3: My first attempt in Inkscape resulted in just the unfilled > > outline, shown as a width of 1. > > > > https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 > > > > For future reference, would OpenSCAD have been able to fill it? > > > > Q4: Without Inkscape, what method would others have used? > > > > I've included the SVG and SCAD. > > > > https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 > > > > https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG. > >scad?raw=1 > > > > Terry > > > > _______________________________________________ > > OpenSCAD mailing list > > To unsubscribe send an email to discuss-leave@lists.openscad.org Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>
T
Terry
Wed, Jul 21, 2021 5:32 PM

Thanks all, those are very helpful. Any later similar project will
benefit!

My first print did indeed need a little sanding but does the job.
https://www.dropbox.com/s/gd84weo34qin8df/Cover-1.jpg?raw=1

I lost some symmetry because my saw cut was not precisely at right
angles to the.

I could have done the job in a matter of minutes using thin
aluminium (I have lots of scraps), or even cardboard, as there's
no need for any strength. But it was mainly a learning exercise.

Thanks for that video re units Deitrich. I'll try those px to mm
changes shortly. I may be back for more Inkscape help in a few
days, as I find it hard going. Although perhaps I should do that
via the Inkscape forum if you use that?

Terry

====================

On Wed, 21 Jul 2021 17:25:02 +0200, you wrote:

  • Q1: I would, yers. because tracing the picture makes a lot of
    pointless points and the from is easy to rebuild (using bezier tool,
    shortcut "b")
  • Q2: for me the svg is the same dimension as imported in OpenSCAD. I
    found in your svg file that everything was set to "px". But you have to
    switch to "mm". I guess this is the reason for the strange Dimensions.
    see another video
    https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA
  • Q3: there are 2 objects, the black "line" and the red fillin. Normally
    this are two parts of one object (fill and stroke) but in your svg this
    are two objects filled: one filled with black (looking like a line but its
    a filled path), one filled with red. It seems that OpenSCAD used only the
    black one (maybe because of intersections?). For this request you should
    use only one filled object (don't use stroke for filled objects because it
    changes the dimensions).
  • Q4: don't know

Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry terrypingm@gmail.com:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in
Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

Thanks all, those are very helpful. Any later similar project will benefit! My first print did indeed need a little sanding but does the job. https://www.dropbox.com/s/gd84weo34qin8df/Cover-1.jpg?raw=1 I lost some symmetry because my saw cut was not precisely at right angles to the. I could have done the job in a matter of minutes using thin aluminium (I have lots of scraps), or even cardboard, as there's no need for any strength. But it was mainly a learning exercise. Thanks for that video re units Deitrich. I'll try those px to mm changes shortly. I may be back for more Inkscape help in a few days, as I find it hard going. Although perhaps I should do that via the Inkscape forum if you use that? Terry ==================== On Wed, 21 Jul 2021 17:25:02 +0200, you wrote: > - Q1: I would, yers. because tracing the picture makes a lot of > pointless points and the from is easy to rebuild (using bezier tool, > shortcut "b") > - Q2: for me the svg is the same dimension as imported in OpenSCAD. I > found in your svg file that everything was set to "px". But you have to > switch to "mm". I guess this is the reason for the strange Dimensions. > see another video > <https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA> > - Q3: there are 2 objects, the black "line" and the red fillin. Normally > this are two parts of one object (fill and stroke) but in your svg this > are two objects filled: one filled with black (looking like a line but its > a filled path), one filled with red. It seems that OpenSCAD used only the > black one (maybe because of intersections?). For this request you should > use only one filled object (don't use stroke for filled objects because it > changes the dimensions). > - Q4: don't know > > >Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry <terrypingm@gmail.com>: > >> I'm improvising a tool from a sawn screwdriver drill. So this >> little project is to make a cover that I will glue into place. >> https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 >> >> From a 'frontal' photo of the open end I used Trace Bitmap in >> Inkscape, saved that as an SVG and opened it in OpenSCAD, shown >> presently at about 10 times its physical size of 41.1 mm long. >> >> https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 >> >> Q1: Would experienced Inkscape users have used its tools to >> manually draw the outline, rather than use Trace Bitmap? (I >> haven't yet got around to practicing that.) >> >> Q2: What method do others use for scaling a flat object like this >> before saving the STL? I'm thinking of using an external tool to >> measure pixel positions between pairs of points. (Is OpenSCAD ever >> likely to have such a handy tool itself?) >> >> Q3: My first attempt in Inkscape resulted in just the unfilled >> outline, shown as a width of 1. >> >> https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 >> >> For future reference, would OpenSCAD have been able to fill it? >> >> Q4: Without Inkscape, what method would others have used? >> >> I've included the SVG and SCAD. >> >> https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 >> >> >> https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 >> >> Terry >> _______________________________________________ >> OpenSCAD mailing list >> To unsubscribe send an email to discuss-leave@lists.openscad.org >>
JB
Jordan Brown
Wed, Jul 21, 2021 5:56 PM

On 7/21/2021 7:52 AM, Terry wrote:

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

It sounds like you're building a model and then trying to force the
model to be the right dimensions, rather than building the model at the
right dimensions in the first place.

I'm not enough of an Inkscape user to know exactly how to do it, but I
expect that you can design in Inkscape in the right scale, and that that
carry through to OpenSCAD and thence the STL without requiring any
special scaling.

It looks like that's an oval - that is, two half-circles with straight
segments between them.  If so, I'd stay entirely in OpenSCAD, either
hulling two circles or unioning two circles with a square, and then
extruding.

If it's not an oval, if it's a more complex curve, I'd still do it
entirely in OpenSCAD, but with Bezier curves.  I have my own
implementation, but you can find them in BOSL2.

This looks like a very small part.  Dont' forget that you can print and
test-fit it quickly.  If you want to be extra fast, print a one or two
layer version.

On 7/21/2021 7:52 AM, Terry wrote: > Q2: What method do others use for scaling a flat object like this > before saving the STL? I'm thinking of using an external tool to > measure pixel positions between pairs of points. (Is OpenSCAD ever > likely to have such a handy tool itself?) It sounds like you're building a model and then trying to force the model to be the right dimensions, rather than building the model at the right dimensions in the first place. I'm not enough of an Inkscape user to know exactly how to do it, but I expect that you can design in Inkscape in the right scale, and that that carry through to OpenSCAD and thence the STL without requiring any special scaling. It looks like that's an oval - that is, two half-circles with straight segments between them.  If so, I'd stay entirely in OpenSCAD, either hulling two circles or unioning two circles with a square, and then extruding. If it's not an oval, if it's a more complex curve, I'd still do it entirely in OpenSCAD, but with Bezier curves.  I have my own implementation, but you can find them in BOSL2. This looks like a very small part.  Dont' forget that you can print and test-fit it quickly.  If you want to be extra fast, print a one or two layer version.
D
dpa
Wed, Jul 21, 2021 7:15 PM

my answer didn't arrive..? trying the 3rd time..

Am Mi., 21. Juli 2021 um 17:25 Uhr schrieb dpa sc@pankd.de:

- Q1: I would, yers. because tracing the picture makes a lot of
pointless points and the from is easy to rebuild (using bezier tool,
shortcut "b")
- Q2: for me the svg is the same dimension as imported in OpenSCAD. I
found in your svg file that everything was set to "px". But you have to
switch to "mm". I guess this is the reason for the strange Dimensions.
see another video
<https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA>
- Q3: there are 2 objects, the black "line" and the red fillin.
Normally this are two parts of one object (fill and stroke) but in your svg
this are two objects filled: one filled with black (looking like a line but
its a filled path), one filled with red. It seems that OpenSCAD used only
the black one (maybe because of intersections?). For this request you
should use only one filled object (don't use stroke for filled objects
because it changes the dimensions).
- Q4: don't know

Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry terrypingm@gmail.com:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in
Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

my answer didn't arrive..? trying the 3rd time.. Am Mi., 21. Juli 2021 um 17:25 Uhr schrieb dpa <sc@pankd.de>: > > - Q1: I would, yers. because tracing the picture makes a lot of > pointless points and the from is easy to rebuild (using bezier tool, > shortcut "b") > - Q2: for me the svg is the same dimension as imported in OpenSCAD. I > found in your svg file that everything was set to "px". But you have to > switch to "mm". I guess this is the reason for the strange Dimensions. > see another video > <https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA> > - Q3: there are 2 objects, the black "line" and the red fillin. > Normally this are two parts of one object (fill and stroke) but in your svg > this are two objects filled: one filled with black (looking like a line but > its a filled path), one filled with red. It seems that OpenSCAD used only > the black one (maybe because of intersections?). For this request you > should use only one filled object (don't use stroke for filled objects > because it changes the dimensions). > - Q4: don't know > > > Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry <terrypingm@gmail.com>: > >> I'm improvising a tool from a sawn screwdriver drill. So this >> little project is to make a cover that I will glue into place. >> https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 >> >> From a 'frontal' photo of the open end I used Trace Bitmap in >> Inkscape, saved that as an SVG and opened it in OpenSCAD, shown >> presently at about 10 times its physical size of 41.1 mm long. >> >> https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 >> >> Q1: Would experienced Inkscape users have used its tools to >> manually draw the outline, rather than use Trace Bitmap? (I >> haven't yet got around to practicing that.) >> >> Q2: What method do others use for scaling a flat object like this >> before saving the STL? I'm thinking of using an external tool to >> measure pixel positions between pairs of points. (Is OpenSCAD ever >> likely to have such a handy tool itself?) >> >> Q3: My first attempt in Inkscape resulted in just the unfilled >> outline, shown as a width of 1. >> >> https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 >> >> For future reference, would OpenSCAD have been able to fill it? >> >> Q4: Without Inkscape, what method would others have used? >> >> I've included the SVG and SCAD. >> >> https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 >> >> >> https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 >> >> Terry >> _______________________________________________ >> OpenSCAD mailing list >> To unsubscribe send an email to discuss-leave@lists.openscad.org >> >
T
Terry
Thu, Jul 22, 2021 9:51 AM

On Wed, 21 Jul 2021 21:15:43 +0200, you wrote:

my answer didn't arrive..? trying the 3rd time..

Did you post a second time Deitrich?

I confess to continuing confusion about the flow of posts here. I
posted a (short) reply thanking all respondents, and attaching a
JPG. But, as usual, I don't see it myself in my incoming mail.
Apart from the much discussed gmail issue, in this case it may be
because of this separate automated email

"The message is being held because:
The message is larger than the 1250 KB maximum size
Either the message will get posted to the list, or you will
receive notification of the moderator's decision."

Checking, I see that my JPG was 1.3 MB. So I guess I should post
links only in future for high res images.

Anyway, I'll take the opportunity of repeating yesterday's reply
again below, with no attachment.

Thanks all, those are very helpful. Any later similar project will
benefit!

My first print did indeed need a little sanding but does the job.
https://www.dropbox.com/s/gd84weo34qin8df/Cover-1.jpg?raw=1

I lost some symmetry because my saw cut was not precisely at right
angles to the.

I could have done the job in a matter of minutes using thin
aluminium (I have lots of scraps), or even cardboard, as there's
no need for any strength. But it was mainly a learning exercise.

Thanks for that video re units Deitrich. I'll try those px to mm
changes shortly. I may be back for more Inkscape help in a few
days, as I find it hard going. Although perhaps I should do that
via the Inkscape forum if you use that?

Terry

Am Mi., 21. Juli 2021 um 17:25 Uhr schrieb dpa sc@pankd.de:

  • Q1: I would, yers. because tracing the picture makes a lot of
    pointless points and the from is easy to rebuild (using bezier tool,
    shortcut "b")
  • Q2: for me the svg is the same dimension as imported in OpenSCAD. I
    found in your svg file that everything was set to "px". But you have to
    switch to "mm". I guess this is the reason for the strange Dimensions.
    see another video
    https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA
  • Q3: there are 2 objects, the black "line" and the red fillin.
    Normally this are two parts of one object (fill and stroke) but in your svg
    this are two objects filled: one filled with black (looking like a line but
    its a filled path), one filled with red. It seems that OpenSCAD used only
    the black one (maybe because of intersections?). For this request you
    should use only one filled object (don't use stroke for filled objects
    because it changes the dimensions).
  • Q4: don't know

Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry terrypingm@gmail.com:

I'm improvising a tool from a sawn screwdriver drill. So this
little project is to make a cover that I will glue into place.
https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1

From a 'frontal' photo of the open end I used Trace Bitmap in
Inkscape, saved that as an SVG and opened it in OpenSCAD, shown
presently at about 10 times its physical size of 41.1 mm long.

https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1

Q1: Would experienced Inkscape users have used its tools to
manually draw the outline, rather than use Trace Bitmap? (I
haven't yet got around to practicing that.)

Q2: What method do others use for scaling a flat object like this
before saving the STL? I'm thinking of using an external tool to
measure pixel positions between pairs of points. (Is OpenSCAD ever
likely to have such a handy tool itself?)

Q3: My first attempt in Inkscape resulted in just the unfilled
outline, shown as a width of 1.

https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1

For future reference, would OpenSCAD have been able to fill it?

Q4: Without Inkscape, what method would others have used?

I've included the SVG and SCAD.

https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1

https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1

Terry


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

On Wed, 21 Jul 2021 21:15:43 +0200, you wrote: >my answer didn't arrive..? trying the 3rd time.. > Did you post a second time Deitrich? I confess to continuing confusion about the flow of posts here. I posted a (short) reply thanking all respondents, and attaching a JPG. But, as usual, I don't see it myself in my incoming mail. Apart from the much discussed gmail issue, in this case it may be because of this separate automated email "The message is being held because: The message is larger than the 1250 KB maximum size Either the message will get posted to the list, or you will receive notification of the moderator's decision." Checking, I see that my JPG was 1.3 MB. So I guess I should post links only in future for high res images. Anyway, I'll take the opportunity of repeating yesterday's reply again below, with no attachment. -------------------- Thanks all, those are very helpful. Any later similar project will benefit! My first print did indeed need a little sanding but does the job. https://www.dropbox.com/s/gd84weo34qin8df/Cover-1.jpg?raw=1 I lost some symmetry because my saw cut was not precisely at right angles to the. I could have done the job in a matter of minutes using thin aluminium (I have lots of scraps), or even cardboard, as there's no need for any strength. But it was mainly a learning exercise. Thanks for that video re units Deitrich. I'll try those px to mm changes shortly. I may be back for more Inkscape help in a few days, as I find it hard going. Although perhaps I should do that via the Inkscape forum if you use that? -------------------- Terry >Am Mi., 21. Juli 2021 um 17:25 Uhr schrieb dpa <sc@pankd.de>: > >> >> - Q1: I would, yers. because tracing the picture makes a lot of >> pointless points and the from is easy to rebuild (using bezier tool, >> shortcut "b") >> - Q2: for me the svg is the same dimension as imported in OpenSCAD. I >> found in your svg file that everything was set to "px". But you have to >> switch to "mm". I guess this is the reason for the strange Dimensions. >> see another video >> <https://share.icloud.com/photos/0WUOa2bATDcr9iuXLNkmf4KjA> >> - Q3: there are 2 objects, the black "line" and the red fillin. >> Normally this are two parts of one object (fill and stroke) but in your svg >> this are two objects filled: one filled with black (looking like a line but >> its a filled path), one filled with red. It seems that OpenSCAD used only >> the black one (maybe because of intersections?). For this request you >> should use only one filled object (don't use stroke for filled objects >> because it changes the dimensions). >> - Q4: don't know >> >> >> Am Mi., 21. Juli 2021 um 16:52 Uhr schrieb Terry <terrypingm@gmail.com>: >> >>> I'm improvising a tool from a sawn screwdriver drill. So this >>> little project is to make a cover that I will glue into place. >>> https://www.dropbox.com/s/hnwqvlme1tq5jge/Photo-2.jpg?raw=1 >>> >>> From a 'frontal' photo of the open end I used Trace Bitmap in >>> Inkscape, saved that as an SVG and opened it in OpenSCAD, shown >>> presently at about 10 times its physical size of 41.1 mm long. >>> >>> https://www.dropbox.com/s/gr5tn5xtfh71uj3/CoverFilledSCAD.jpg?raw=1 >>> >>> Q1: Would experienced Inkscape users have used its tools to >>> manually draw the outline, rather than use Trace Bitmap? (I >>> haven't yet got around to practicing that.) >>> >>> Q2: What method do others use for scaling a flat object like this >>> before saving the STL? I'm thinking of using an external tool to >>> measure pixel positions between pairs of points. (Is OpenSCAD ever >>> likely to have such a handy tool itself?) >>> >>> Q3: My first attempt in Inkscape resulted in just the unfilled >>> outline, shown as a width of 1. >>> >>> https://www.dropbox.com/s/fa7hp79utokkwcp/CoverOutlineSCAD.jpg?raw=1 >>> >>> For future reference, would OpenSCAD have been able to fill it? >>> >>> Q4: Without Inkscape, what method would others have used? >>> >>> I've included the SVG and SCAD. >>> >>> https://www.dropbox.com/s/yr7ggzvniqdyi36/PhotoPSP8-Filled.svg?raw=1 >>> >>> >>> https://www.dropbox.com/s/1rfu903f2dospet/Cover-Filled-FromPhotoSVG.scad?raw=1 >>> >>> Terry >>> _______________________________________________ >>> OpenSCAD mailing list >>> To unsubscribe send an email to discuss-leave@lists.openscad.org >>> >>