Hi Guys, my name is Ray and I really need your help. I have a school project I am working on 3D human organs i.e. the heart and lungs. Unfortunately, I need to 3D print them and make them hollow so as to apply air into them to make them inflate and deflate. But hollowing out these complicated structures without destroying them is becoming a problem. Is there any way I can do this? Any alternative solutions are appreciated as I am not so good at this whole CAD thing. Thanks

What program was used to create the 3D models?Well I'll assume since you posted in an AutoCAD forum that you did indeed use AutoCAD although that would probably not be the best choice.  Try the SHELL command.
John Connor2017-03-29 16:07:59