Hello, For a school assignment I need to have a small part printed. I designed it in 3D using Sketchup. On the tutorials section of the Shapeways website there are instructions for working with Sketchup models. I downloaded and installed Meshlab and Accutrans and followed the instructions. My model apparently has holes. It keeps having holes after redesigning several times. It has cost me many hours to redesign this thing over & over again. Then I found and followed the instructions on the tutorials website for fixing a 3D model for printing using Netfabb. That seemed to work well. I end up with a single shell with no holes and nothing in red. So I save. Here are the problems: re-importing the file back into Sketchup shows randomly huge dimensions (1000x as big as it should be). Importing the file in Accutrans shows thousands of holes. I am at a loss. I would really like to upload my design to Shapeways soon to get it printed in time. Would appreciate help with this. At this point I'm willing to pay a designer to get this done. Thanks for looking into this.