Ok, day four using Google Sketchup and I think I'm getting more comfortable with the program. I designed this multi-grenade launcher, put a 5mm hole in the top for weapon storage and a 3mm clip point on the scope. I'm still having trouble uploading the designs to Shapeways, though. Since I'm using Google Sketchup I have to convert the designs from .skp to .obj using Babel3D. I choose mm when I upload the designs (It did work when I used cm, but the design came out oversized and would have cost me 90 bucks) and I get this message from Shapeways: If anyone can help me figure out how to properly upload my designs I would be very grateful! I've got more than a few ideas that I would love to see come to fruition.