The big thing I've found in most of the communities that would seriously benefit from 3D printed replacement parts is that there are three challenges that have to be overcome, otherwise nothing really happens:
1) A member is willing to purchase and fully understand how to maintain a 3D printer
2) A member has to be fully capable of modelling parts for export into Gcode either from photos or diagrams
3 )A member is able to produce components for other members and ship them at minimal cost or by providing the models for free to places like Thingiverse so that others can manufacture the parts as well.
That last one is where most people offering to 3D print parts get stuck up. Either people start throwing money at them and they see dollar signs from then on, or they produce it and then after a few months they stop being active on the forum, taking the design or designs with them because they didn't upload them anywhere.
That being said, a 3D printer in the right hands is an excellent tool in this hobby for replacing otherwise long out of production parts. Good job putting your skills to use like this.
