Ironically, lack of DIY/consumer powder coating (and, perhaps, more significantly -- steel bending) tools were reasons Bre Pettis gave for why MakerBot went closed source.
"Some of the shifts we’ve just made, that’ve made some people grumpy. We are not sharing the design files for the body of the Replicator 2. That’s because it’s powder coated steel, and unless you have, like, an open-source steelbender, you’re not going to be able to do this, it’s not something you can do, at home. It’s something that really you have to have a manufacturing facility to do." [http://makezine.com/2012/09/28/bre-pettis-ohs-challenges-of-...]
"Some of the shifts we’ve just made, that’ve made some people grumpy. We are not sharing the design files for the body of the Replicator 2. That’s because it’s powder coated steel, and unless you have, like, an open-source steelbender, you’re not going to be able to do this, it’s not something you can do, at home. It’s something that really you have to have a manufacturing facility to do." [http://makezine.com/2012/09/28/bre-pettis-ohs-challenges-of-...]