“The purpose of this sub-reddit is to help people find other people with a RepRap to get the parts, and in turn they “Print-It-Forward” and print off a set of parts and send them off to someone else. Here we also want to be as altruistic as possible, so if you happen to have a spare 3D printer lying around…you know what to do!”
https://www.reddit.com/r/reprapPIF