Hi,
May I ask for the right approach to making a hole in a non-flat surface? On a flat surface I would go with the sketch and pocket but for a non-flat surface I went with the boolean operations. However these seems to fail from time to time and no hole is being made by the 'Cut' operation. I can't seem to figure out what did I do wrong? Some holes are being done the right way and some not.
I've attached the blower fan tryout project file with a bunch of beams cutting a square holes in a fan duct thing. You would notice that some boolean operations went right, one failed, and if you apply a boolean operator on any of the outstanding ones, it will fail.
I'm using Part Design WB and Freecad 0.19 own (git) build. (Due to Ubuntu Snap App version failing on GL Context creation, but anyway that's not the problem as my changes are only in GUI part.)
I would appreciate any help or hint on the best approach to this.
[SOLVED]
Solution proposed by chrisb was the one that worked. Part Design WB has 2 flavors of boolean operations. In this design the 'Substractive Primitive' was the right one and the classic boolean was failing.