how to round/soften top edges
thiscode does prettymuch the same as code below, but might be easier to
understand, by just looking at it:
include <constructive-compiled.scad>
Wo=34; Lo=60; Ro = 8;
$skinThick =1.4; $margin=0;
assemble()
{
addRemove(height(skin(5)),
chamfer(down=-.5,up=-.5,side=-Ro,fnCorner=40))
box(skin(Wo),skin(Lo));
//remove the Lid at the top so you can see into the object
remove(Z(5-1),height(5),chamfer(0,0,side=-Ro,fnCorner=40))
box(Wo,Lo);
}
result:
On 30.11.23 13:19, pproj--- via Discuss wrote:
Yes it seems that the namesaces overlap.
here is a take on it using only constructive lib skin funtionality ( i
like your extrusion approach too)
include <../devlibs/constructive/constructive-all.scad>
Wo=34; Lo=60; Wi=23; Li=34; H=5; Ro = 8; Ri = 3; T=1.4;Off = 2.0;
$skinThick =1.4;
assemble() {
addRemove(Z(margin(.1)),TODOWN(),height(skin(H)))
chamfer(down=-1,up=-.15,side=-Ro,fnCorner=40)
box(skin(Wo),skin(Lo));
}
i am not quite sure what bobs code was supposed to look like, so this
is only a first take.
more on skins in constructive here:
https://github.com/solidboredom/constructive/blob/main/tutorials/tutorial-partIII.md#easily-create-skins-with-skinsize0-skinthickskinthick-walls2-marginmargin
On 30.11.23 12:20, Marcus Poller wrote:
Hi Peter,
include <constructive-compiled.scad>
chamfer(4,-2) tube(d=10,h=20,wall=2.5);
I can't compile Bobs code after including <constructive-compiled.scad>; I get error messages of this
WARNING: Too many unnamed arguments supplied in file ../.local/share/OpenSCAD/libraries/BOSL2/attachments.scad, line 3274
kind. I guess there is some naming ambiguities between BOSL and constructive-compiled;
Cheers,
Marcus
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Hi Adrian,
That would be interesting to explore. Thank you.
I am avoiding minkowski because it will round the bottom as well and that mates with parts on the camper. Which brings me to reason 2. I don't want the dimensions to change even a little.
Bob
Thursday, November 30, 2023, 6:20:14 AM, you wrote:
You can do that using the offset_sweep() module in BOSL2. You would need to replace the rect_tube()'s with differences of offset_sweep() applied to rect().
On Wed, Nov 29, 2023 at 8:55 PM Bob Roos via Discuss discuss@lists.openscad.org wrote:
Hello ,
I would like to soften the top inner and outer edges on this figure. I don't need much. I just wanted to get rid of the edge.
Thank you
Bob Roos
include <BOSL2/std.scad> //or screws or threading
Wo=34;
Lo=60;
Wi=23;
Li=34;
H=10;
Ro = 8;
Ri = 3;
T=1.4;
Off = 2.0;
difference(){
union(){
rect_tube(size=[Wo,Lo], wall=(Wo-Wi)/2, rounding=Ro, h=H,irounding=3);
rect_tube(size=[Wo,Lo-(Wo-Wi)/2], wall=(Wo-Wi)/2, rounding=Ro, h=H,irounding=3);
}
rect_tube(size=[Wo-T,Lo-T], wall=(Wo-Wi)/2-T,h=H-T,irounding=3, rounding=Ro);
#rect_tube(size=[Wo-T2,Lo-T2], wall=(Wo-Wi)/2-T,h=Off,irounding=3, rounding=Ro);
up(Off/2)cuboid([Wo-6T,Lo-6T,Off]);
}
--
have Fun,
Bob mailto:roosbob@wybatap.com
I thought something like that should be doable with minkowski() and came
up with a module in the attached example:
round_edges_except_bottom(radius). It 3D-insets an object, then
minkowskis it back to original size using a cylinder capped with half a
sphere.
Regards,
Curt
On 12/1/2023 5:53 AM, Bob Roos via Discuss wrote:
Hi Adrian,
That would be interesting to explore. Thank you.
I am avoiding minkowski because it will round the bottom as well and
that mates with parts on the camper. Which brings me to reason 2. I
don't want the dimensions to change even a little.
Bob
Thursday, November 30, 2023, 6:20:14 AM, you wrote:
You can do that using the offset_sweep() module in BOSL2. You
would need to replace the rect_tube()'s with differences of
offset_sweep() applied to rect().
On Wed, Nov 29, 2023 at 8:55 PM Bob Roos via Discuss
<discuss@lists.openscad.org> wrote:
Hello ,
I would like to soften the top inner and outer edges on this
figure. I don't need much. I just wanted to get rid of the edge.
Thank you
Bob Roos
include <BOSL2/std.scad> //or screws or threading
Wo=34;
Lo=60;
Wi=23;
Li=34;
H=10;
Ro = 8;
Ri = 3;
T=1.4;
Off = 2.0;
difference(){
union(){
rect_tube(size=[Wo,Lo], wall=(Wo-Wi)/2, rounding=Ro,
h=H,irounding=3);
rect_tube(size=[Wo,Lo-(Wo-Wi)/2], wall=(Wo-Wi)/2, rounding=Ro,
h=H,irounding=3);
}
rect_tube(size=[Wo-T,Lo-T],
wall=(Wo-Wi)/2-T,h=H-T,irounding=3, rounding=Ro);
#rect_tube(size=[Wo-T*2,Lo-T*2],
wall=(Wo-Wi)/2-T,h=Off,irounding=3, rounding=Ro);
up(Off/2)cuboid([Wo-6*T,Lo-6*T,Off]);
}
--
Best regards,
Bob mailto:roosbob@wybatap.com
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--
have Fun,
Bob mailto:roosbob@wybatap.com mailto:roosbob@wybatap.com
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