Hi guys, I'm searching everywhere but can't find an answer to this problem. Thanks for your help. I'm trying to make my models hallow so I can 3d print them cheaper. In 3ds max, I export to obj... and things go pretty well at that point. My model is the right size and everything. It's even the right shape. But on the inside... it's not hallow. I'm using the shell modifier in 3ds max. I know it's hallow! But exporting to obj breaks it. So do what now? Thanks again!