Hello all shapewayers, I just got my first model, which I made myself: http://www.shapeways.com/model/111540/artists_penholder.html And now it seems I made the pen-holes 2-3 mm too small. So I thought I could file it, but I don't know. Any advice from anyone who's tried already? I'm afraid that it will break if I file it so there's only about 1 mm left on each side of the hole, which it would be if I filed it. Oh and I thought about putting a litle lamp inside the head of the model, with some wiring and a light switch, any thoughts about the heat effects regarding that too? EDIT: Lastly, I wonder if anyone know where I could buy any kind of spray wich would allow me to make my model a bit more sturdy regarding discoloration and such.