As other examples, the Glowforge forums are positive in tone, members are mutually supportive, and the company is reasonably tolerant of criticism and of discussion of dangerous experiments, and despite selling materials themselves does not interfere with members discussing alternate sources of materials.
I also remember the Sphero forums as quite useful, although I haven't visited for a while.
I also remember the Sphero forums as quite useful, although I haven't visited for a while.