I tried printing in colour sandstone for my first time and ran into an odd error that I'm not sure is because there is an error in uploading or if it is because of the program I used to colour the model. I had printed a flat disk with a logo on it, 3.65" Dia x 0.2" Thick. When I received the print it was 2.78" Dia. x 0.2" Thick. It's my fault for not checking the dimensions on Shapeways before ordering but I can't figure out where the error is occurring. I imported the .stl into Photoshop and coloured it there, when exporting, it tells me the dimensions will be 3.65" Dia x 0.2" Thick, but when I upload it to Shapeways it turns into 2.78" Dia. x 0.2" Thick. It only seems to be affecting the xy dimensions as the z dimension always turns out correctly. I was able to trick the program by scaling up the diameter to 4.79" which uploaded to 3.65" Dia. so I can get the piece made correctly. I'm wondering if anyone else has run into this issue uploading from other programs or if this might be an error Photoshop creates?