00:30 <tcurdt> folks - is there are way to do a negative minkowksi ... like a negative offset in 2d - but in 3d?

00:32 <peeps[zen]> tcurdt: not really in any direct way. i tried making my own script which does something like that, but it ended being a buggy mess. https://github.com/openscad/openscad/issues/4617

00:33 <peeps[zen]> (you have to expand the code section to see the scad)

00:37 <tcurdt> I am reading :)

00:38 <tcurdt> and it gave me an idea that might work in my case

00:38 <tcurdt> but man ... it would be nice to have this for real

00:39 <tcurdt> came across this already a couple of times

05:53 <J23k34> peeps[zen] you are right overlapping would be a nice feature - could work if you  multiply the shape with pitch distance and then make only a 360 rotation but closing the start and end may be tricky but would require less segments. Not sure how performance will be if you make a long screw and need to union hundreds  of thread segments.

13:46 <gbruno> [github] kintel closed issue #4574 (Manifold - CGAL assertion failed with projection()) https://github.com/openscad/openscad/issues/4574

13:52 <gbruno> [github] kintel closed issue #4623 ( [manifold] Minkowski failed with error, falling back to Nef operation: CGAL ERROR: assertion violation!) https://github.com/openscad/openscad/issues/4623

17:25 <gbruno> [github] kintel closed issue #4677 (Difference in minkowski in manifold) https://github.com/openscad/openscad/issues/4677

17:41 <gbruno> [github] pca006132 closed pull request #4834 (#3781 Proof of Concept) https://github.com/openscad/openscad/pull/4834

17:41 <gbruno> [github] pca006132 reopened pull request #4834 (#3781 Proof of Concept) https://github.com/openscad/openscad/pull/4834