So I've got this old file that's been on our server a while and I need to make a small modification to it, and I did. But in changing a flange length, the mounting holes disappeared. They are just simple extrude cut circles, and the extrusion fails and will not work. I tried every single option in extruded cut, I tried creating new sketches, no change in options results in anything other than the error "failed to cut body"
Anyone seen this before? Know a solution?
Found the problem by saving as a .stp and trying to open.
Apparently any surface error in the part does not necessarily show up as an error, AND any error anywhere on a part can make any new feature creation fail. If you run into a similar problem, carefully run over your part for possible surface errors or try to save as a step file and import.