I've read the materials page and I understand that the SS wall thickness has to be 3mm. I've been frustrated by that because I tend toward the more delicate designs and 3mm is just too heavy. But looking through the gallery, I find that many pieces have been printed with less than 3mm, and I'm wondering why. Here is an example...http://www.shapeways.com/model/65567/armadillo.htm l. He does fine work. In this example the band is probably 3mm, but the filigree on top is closer to 1mm and it printed fine. Will somebody please explain to me what is actually acceptable.. what works. How small can I actually go?