Partial Rotate Extrude (OpenSCAD)

by 3DCentralVA, published

Partial Rotate Extrude (OpenSCAD) by 3DCentralVA Nov 8, 2012




Partial Rotate Extrude (OpenSCAD) by 3DCentralVA is licensed under the GNU - LGPL license.

Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

11123Views 1543Downloads


In the process of designing a printable frame for a mini quad copter, I realized I needed a feature of OpenSCAD that I don't think was implemented yet. While I know this is not a perfect solution, it was a good enough hack for my needs.

Included is the example use case.


Use (same as rotate_extrude):
| partial_rotate_extrude(angle, radius, convexity) circle(5);

This will extrude the circle for angle degrees about the origin at a distance of radius. The convexity parameter is the same as in rotate_extrude, see http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/2D_to_3D_Extrusion

Copy/Paste access:

partial_rotate_extrude(235, 20, 10) circle(5);

module pie_slice(radius, angle, step) {
for(theta = [0:step:angle-step]) {
rotate([0,0,0]) linear_extrude(height = radius2, center=true)
polygon( points = [[0,0],[radius
cos(theta+step) ,radius sin(theta+step)],[radiuscos(theta),radius*sin(theta)]]);

module partial_rotate_extrude(angle, radius, convex) {
intersection () {
rotate_extrude(convexity=convex) translate([radius,0,0]) child(0);
pie_slice(radius*2, angle, angle/5);

All Apps

Upgrade this Thing with Thingiverse Apps

No results.

Thanks! This is just what I needed to make a part to hold a 3D print spool. I'll put up the part later on if I find it useful + fix the part where you need to drill it out for it to work...

I registered here and made an account on Thingiverse, which I think is a great thing, just to say: you're awesome!

now I gotta fine tune this thing with ellipses, and their orientation, to make a bellmouth

hahahahahah, wow, thanks!!! isn't openscad great??