There is a cube and a ring intersecting. If I select the ring and add a Boolean-difference modifier to it with the Cube, the boolean fails with the message “Can’t execute the boolean operation”. See the attached blend file.
test1.blend (477 KB)
I tried 263.5 as it is and the result was not so pretty as in your example -it required manual cleaning by deleting the cube’s faces and then manually fill the end faces of the ring. Actually I could make 262 produce the same result just by rotating the ring a bit at Z axis (11 deg ) -thanks though!
But I finally found the process to guarantee a perfect boolean in this case:
Did the same with the cube (although the cube in this case didn’t need the last step).
Then the boolean-difference worked perfectly!
Yup… For the clean ring i actually did copy loop of yours and extrude/scale, extrude z thing. But, yes, boolean likes clean mesh more, likely.
Happy blending!
The ring was directly converted from an extruded curve -it seems this process does not produce clean-enough meshes.
The real issue is the doubles in the ring, if you remove those first all should be well. And yes, the ring should have cleaner topology for a better result.
You can start with a circle curve with some extrude, then use the solidify modifier to give it depth. The result when converted to a mesh will be clean.
solidified_curve.blend (395 KB)
Nice one, pappy! Somehow missed that and was a bit puzzled by resulting mesh, did what i did and missed again…:spin:
@ pappy Thanks, so the solidify modifier should be preferred over curve extrude to have a clean mesh output.
I wonder though, why the solidify modifier works in preview with a curve object directly and when I click “apply” only then it warns “cannot apply constructive modifiers on curve” -it shouldn’t work at all to prevent confusion.