I'm trying my hand at making some HO Scale parts. My test model is roughly 10mm x 10mm. I upload as an .stl file, and Shapeways rejects. Too small, I'm guessing. I enlarged the piece roughly 200 percent. The saved dimensions roughly roughly 23 x 23 mm. The file uploads, but the readout says it's 1.2 mm x 1.2mm! I resize to get the 10 mm part I wanted in the first place. I'm using ViaCad Pro 11 on a Mac. Maybe I'm missing some settings, but I'm open to any other troubleshooting ideas. Uploaded the file again to double check. The 23 x 23 mm model shrank to 1.2 x 1.2 mm. I thought it might have been giving me the size in centimeters. Nope.