Thank you, Michael.

I'll talk to the designers/engineers and see what they say. I'll also delicately ask if they can make sure (as much as possible) that I get parts with "water-tight" seams, whenever possible.

Hello,

Getting watertight models from clients might be tough sometimes. I know Spaceclaim in my experience does a good job of finding those problems and fixing them. They seem to have focused on model repair as one of their strengths. It's a little more involved workflow IMO, and not as inexpensive as MoI. I find myself starting in MoI and then moving to Rhino or SCE to finish some operations that can't currently be done in MoI. It doesn't hurt that the MoI community is so quick to help.