Can we hierarchify (is that a word?) the forums?
Thus: Level One Hardware, Software, General/Theoretical
Level two under Hardware: printheads, movement stage, circuits and wiring, etc
Level three under printheads: thermoplastic, syringe/pump/paste, subtractive/milling, sintering/fusing, etc
and so on.
The current divisions of People, electronics mechanics, and software are also valid.