Empathy List Archives

J

jon

Mon, Jul 25, 2016 12:56 AM

I have been printing parts that were designed to have vertical walls,
but the walls are not vertical. I looked at the layers as generated by
my slicer, and the vertical walls were moving from layer to layer. I
tried a different slicer, with the same results. This is all explained
better in the OpenSCAD source file.

I have attached the SCAD file as well as the generated STL file: I hope
they make it. Any thoughts? I'm using 2015-3-2 on Windows 10.

Jon

I have been printing parts that were designed to have vertical walls, but the walls are not vertical. I looked at the layers as generated by my slicer, and the vertical walls were moving from layer to layer. I tried a different slicer, with the same results. This is all explained better in the OpenSCAD source file. I have attached the SCAD file as well as the generated STL file: I hope they make it. Any thoughts? I'm using 2015-3-2 on Windows 10. Jon

M

MichaelAtOz

Mon, Jul 25, 2016 2:49 AM

http://forum.openscad.org/file/n17970/Anomoly.jpg
Netfabb says it is 10.8mm wide which is as you specified.

Adding
color("blue",0.4) {
translate([-ar,-0.25,-0.5]) cube([ar2,0.5,1]);
translate([-ar,-0.25,20-0.5]) cube([ar2,0.5,1]);

Then using Netfabb rulers;
http://forum.openscad.org/file/n17970/Anomoly_rules.jpg
means you have problems with your slicers...

Admin - PM me if you need anything, or if I've done something stupid...

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17970.html
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<http://forum.openscad.org/file/n17970/Anomoly.jpg> Netfabb says it is 10.8mm wide which is as you specified. Adding color("blue",0.4) { translate([-ar,-0.25,-0.5]) cube([ar*2,0.5,1]); translate([-ar,-0.25,20-0.5]) cube([ar*2,0.5,1]); Then using Netfabb rulers; <http://forum.openscad.org/file/n17970/Anomoly_rules.jpg> means you have problems with your slicers... ----- Admin - PM me if you need anything, or if I've done something stupid... Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out! -- View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17970.html Sent from the OpenSCAD mailing list archive at Nabble.com.

RP

Ronaldo Persiano

Mon, Jul 25, 2016 3:06 AM

I tried the stl file with Slic3r and all layers of vertical walls are
equal. I used Repetier with parallel projection. Are you sure you are not
visualizing it with perspective projection?

2016-07-24 23:49 GMT-03:00 MichaelAtOz oz.at.michael@gmail.com:

http://forum.openscad.org/file/n17970/Anomoly.jpg
Netfabb says it is 10.8mm wide which is as you specified.

Adding
color("blue",0.4) {
translate([-ar,-0.25,-0.5]) cube([ar2,0.5,1]);
translate([-ar,-0.25,20-0.5]) cube([ar2,0.5,1]);

Then using Netfabb rulers;
http://forum.openscad.org/file/n17970/Anomoly_rules.jpg
means you have problems with your slicers...

Admin - PM me if you need anything, or if I've done something stupid...

Unless specifically shown otherwise above, my contribution is in the
Public Domain; to the extent possible under law, I have waived all
copyright and related or neighbouring rights to this work. Obviously
inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it!
http://www.ourfairdeal.org/ time is running out!

View this message in context:
http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17970.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

I tried the stl file with Slic3r and all layers of vertical walls are equal. I used Repetier with parallel projection. Are you sure you are not visualizing it with perspective projection? 2016-07-24 23:49 GMT-03:00 MichaelAtOz <oz.at.michael@gmail.com>: > <http://forum.openscad.org/file/n17970/Anomoly.jpg> > Netfabb says it is 10.8mm wide which is as you specified. > > Adding > color("blue",0.4) { > translate([-ar,-0.25,-0.5]) cube([ar*2,0.5,1]); > translate([-ar,-0.25,20-0.5]) cube([ar*2,0.5,1]); > > Then using Netfabb rulers; > <http://forum.openscad.org/file/n17970/Anomoly_rules.jpg> > means you have problems with your slicers... > > > > ----- > Admin - PM me if you need anything, or if I've done something stupid... > > Unless specifically shown otherwise above, my contribution is in the > Public Domain; to the extent possible under law, I have waived all > copyright and related or neighbouring rights to this work. Obviously > inclusion of works of previous authors is not included in the above. > > The TPP is no simple “trade agreement.” Fight it! > http://www.ourfairdeal.org/ time is running out! > -- > View this message in context: > http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17970.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >

J

jon

Mon, Jul 25, 2016 11:13 AM

And there you have it. Perspective projection.

This still leaves me with prints that are wrong, but at least now I can
view things correctly (thank you!). I now have NO idea why the prints
are as they are.

Thanks again

Jon

On 7/24/2016 11:06 PM, Ronaldo Persiano wrote:

I tried the stl file with Slic3r and all layers of vertical walls are
equal. I used Repetier with parallel projection. Are you sure you are
not visualizing it with perspective projection?

And there you have it. Perspective projection. This still leaves me with prints that are wrong, but at least now I can view things correctly (thank you!). I now have NO idea why the prints are as they are. Thanks again Jon On 7/24/2016 11:06 PM, Ronaldo Persiano wrote: > I tried the stl file with Slic3r and all layers of vertical walls are > equal. I used Repetier with parallel projection. Are you sure you are > not visualizing it with perspective projection? >

M

MichaelAtOz

Mon, Jul 25, 2016 12:13 PM

Tends to be a slipping coupling, pully or belt, if you print at slow speeds
it is reduced; the jerk at high speeds shows it up.

Admin - PM me if you need anything, or if I've done something stupid...

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17973.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

Tends to be a slipping coupling, pully or belt, if you print at slow speeds it is reduced; the jerk at high speeds shows it up. ----- Admin - PM me if you need anything, or if I've done something stupid... Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out! -- View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17973.html Sent from the OpenSCAD mailing list archive at Nabble.com.

J

jon

Mon, Jul 25, 2016 2:18 PM

This would be good advice ... except that my machine uses lead screws on
all axes. I will ponder further. Thanks!

On 7/25/2016 8:13 AM, MichaelAtOz wrote:

Tends to be a slipping coupling, pully or belt, if you print at slow speeds
it is reduced; the jerk at high speeds shows it up.

This would be good advice ... except that my machine uses lead screws on all axes. I will ponder further. Thanks! On 7/25/2016 8:13 AM, MichaelAtOz wrote: > Tends to be a slipping coupling, pully or belt, if you print at slow speeds > it is reduced; the jerk at high speeds shows it up. > > >

DB

David Boyd

Mon, Jul 25, 2016 2:22 PM

Could be cumulative error due to a slight difference in step/mm calibration.

On 7/25/16 10:18 AM, jon wrote:

This would be good advice ... except that my machine uses lead screws
on all axes. I will ponder further. Thanks!

On 7/25/2016 8:13 AM, MichaelAtOz wrote:

Tends to be a slipping coupling, pully or belt, if you print at slow
speeds
it is reduced; the jerk at high speeds shows it up.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

--
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David W. Boyd
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fax: +1-703-656-4829
cell: +1-703-402-7908
============== http://usstem.org/ ============
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Board Member- USSTEM Foundation - www.usstem.org
Program Assistant - USFIRST - www.usfirst.org

The information contained in this message may be privileged
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Could be cumulative error due to a slight difference in step/mm calibration. On 7/25/16 10:18 AM, jon wrote: > This would be good advice ... except that my machine uses lead screws > on all axes. I will ponder further. Thanks! > > > On 7/25/2016 8:13 AM, MichaelAtOz wrote: >> Tends to be a slipping coupling, pully or belt, if you print at slow >> speeds >> it is reduced; the jerk at high speeds shows it up. >> >> >> > > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org -- ========= mailto:david.boyd@usstem.org ============ David W. Boyd 7371 Atlas Walk Way, #242 Gainesville, Va 20155 fax: +1-703-656-4829 cell: +1-703-402-7908 ============== http://usstem.org/ ============ First Robotic Mentor - FRC, FTC - www.iliterobotics.org Board Member- USSTEM Foundation - www.usstem.org Program Assistant - USFIRST - www.usfirst.org The information contained in this message may be privileged and/or confidential and protected from disclosure. If the reader of this message is not the intended recipient or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by replying to this message and deleting the material from any computer.

M

MichaelAtOz

Mon, Jul 25, 2016 9:30 PM

Then your steppers are losing steps/skipping
http://machinedesign.com/motorsdrives/why-open-loop-steppers-lose-steps-and-how-solve-problem
?

Admin - PM me if you need anything, or if I've done something stupid...

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17976.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

Then your steppers are losing steps/skipping <http://machinedesign.com/motorsdrives/why-open-loop-steppers-lose-steps-and-how-solve-problem> ? ----- Admin - PM me if you need anything, or if I've done something stupid... Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out! -- View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17976.html Sent from the OpenSCAD mailing list archive at Nabble.com.

J

jon

Mon, Jul 25, 2016 9:35 PM

Thanks for the thought, but in fact the remainder of the print is
pristine, so that is not the problem.

On 7/25/2016 5:30 PM, MichaelAtOz wrote:

Then your steppers are losing steps/skipping
http://machinedesign.com/motorsdrives/why-open-loop-steppers-lose-steps-and-how-solve-problem
?

Admin - PM me if you need anything, or if I've done something stupid...

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17976.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7690 / Virus Database: 4627/12682 - Release Date: 07/25/16

Thanks for the thought, but in fact the remainder of the print is pristine, so that is not the problem. On 7/25/2016 5:30 PM, MichaelAtOz wrote: > Then your steppers are losing steps/skipping > <http://machinedesign.com/motorsdrives/why-open-loop-steppers-lose-steps-and-how-solve-problem> > ? > > > > ----- > Admin - PM me if you need anything, or if I've done something stupid... > > Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. > > The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out! > -- > View this message in context: http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17976.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2016.0.7690 / Virus Database: 4627/12682 - Release Date: 07/25/16

RP

Ronaldo Persiano

Mon, Jul 25, 2016 10:01 PM

How exactly are your prints not vertical? Are they slanted, growing bigger
at each layer? Or what?

2016-07-25 18:35 GMT-03:00 jon jon@jonbondy.com:

Thanks for the thought, but in fact the remainder of the print is
pristine, so that is not the problem.

On 7/25/2016 5:30 PM, MichaelAtOz wrote:

Then your steppers are losing steps/skipping
<
http://machinedesign.com/motorsdrives/why-open-loop-steppers-lose-steps-and-how-solve-problem

?

Admin - PM me if you need anything, or if I've done something stupid...

Unless specifically shown otherwise above, my contribution is in the
Public Domain; to the extent possible under law, I have waived all
copyright and related or neighbouring rights to this work. Obviously
inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it!
http://www.ourfairdeal.org/ time is running out!

View this message in context:
http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17976.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7690 / Virus Database: 4627/12682 - Release Date: 07/25/16

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

How exactly are your prints not vertical? Are they slanted, growing bigger at each layer? Or what? 2016-07-25 18:35 GMT-03:00 jon <jon@jonbondy.com>: > Thanks for the thought, but in fact the remainder of the print is > pristine, so that is not the problem. > > > > On 7/25/2016 5:30 PM, MichaelAtOz wrote: > >> Then your steppers are losing steps/skipping >> < >> http://machinedesign.com/motorsdrives/why-open-loop-steppers-lose-steps-and-how-solve-problem >> > >> ? >> >> >> >> ----- >> Admin - PM me if you need anything, or if I've done something stupid... >> >> Unless specifically shown otherwise above, my contribution is in the >> Public Domain; to the extent possible under law, I have waived all >> copyright and related or neighbouring rights to this work. Obviously >> inclusion of works of previous authors is not included in the above. >> >> The TPP is no simple “trade agreement.” Fight it! >> http://www.ourfairdeal.org/ time is running out! >> -- >> View this message in context: >> http://forum.openscad.org/Strange-problem-with-verticality-tp17969p17976.html >> Sent from the OpenSCAD mailing list archive at Nabble.com. >> >> _______________________________________________ >> OpenSCAD mailing list >> Discuss@lists.openscad.org >> http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2016.0.7690 / Virus Database: 4627/12682 - Release Date: 07/25/16 >> > > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >

discuss@lists.openscad.org

Strange problem with verticality

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

The TPP is no simple “trade agreement.” Fight it!
http://www.ourfairdeal.org/ time is running out!

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!

The TPP is no simple “trade agreement.” Fight it!
http://www.ourfairdeal.org/ time is running out!