Boolean failed when attempting Union

I have a 10 shapes which I need to combine to make one complex piece and the software allows any combination of 8 or so parts to Union, but always gives the error “Boolean failed” when attempting to Union the last couple of shapes.

I’m very new to Shapr3D and CAD in general, so any explanation or workaround in layman’s terms would be greatly appreciated.


Hey - sorry about experience. Can you upload a picture or we’d be happy to look at the file if you send it to