I'm trying to make a single mesh from these three primatives. This will be used to make a belt clip for a knife. When I try a union boolean, all the objects disappear. When I try to combine objects, they both disappear. I can normally even combine objects that aren't physically attached into a single "object" but it won't even let me combine the two half cylinders. Here's my operation so far:
create the primatives > match sizes > add center loop to elongated cube to match center vertex on half cylinder > remove unnecessary intersecting faces (the interior of the objects where faces don't need to be) > cleanup each mesh > delete history by type: all > Union
All objects disappear. I follow this same flow when trying combine as well. I can't even build this by merging vertices because they're separate objects still.
