About this 3D model
I needed a dimmer knob and plate... It seems to be a European (UP) standard size. (I had this dimmer http://www.elektroversand-schmidt.de/images/jung_dimmer_266gde.jpg) Oh, yeah: customizable, just in case. Edit v1.2 with roundings using my new rounded primitives code. http://www.thingiverse.com/thing:58478 Also has a rack now.