Well, I'm Canadian, I am a professional designer by day and already do this sort of thing for the local airsoft, RC, automotive, vaping and astronomy community..
Here's some of the designs I choose to share for free...
http://www.thingiverse.com/xzivr/designs
Oh. And not only do I have the printer, I also have a metal lathe, mill and mig welder. Currently building a custom HPA engine for my SR25 using mostly aluminum (and anodizing it) with a delrin nozzle. Next project is a custom lightsaber hilt because the nerd in me is shorting, haha.