![]() Difference of a difference, note artefacts Here, for a conduit light adapter design, I used a difference of a difference to effectively subtract a space at an angle, complete with mounting fixtures. Sometimes when describing negative space it’s useful to do a difference of a difference. Module rounded_extruded_square ( l, d ) linear_extrude ( 100 ) offset ( - d ) offset ( d ) cube () Īs stress concentrates at sharp changes in geometry, adding a chamfer or fillet can be the difference between an extremely strong part and one that fails straight away. ![]() This is often performed manually using a hull between circles, for example: It’s easy, though, to chamfer/fillet extrusions in negative and positive space. There have been user-land solutions however, but with caveats. OpenSCAD can’t currently chamfer or fillet 3D objects.
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