F.O.A. MG - The Belt-Fed Dart Launcher
This is the belt-fed dart gun that I built because: why not? It took me a few months to design and model. Printing actually went quickly compared to designing. The gears took the longest. It was a "eureka" moment when I realized I could build a transmission into the thing. The motor spins at about 12 kRPM, but the feed drive needs to turn at about 50 rpm. That kind of reduction wasn't easy in such a tight space. I didn't realize the torque would be such an issue. During testing, I split 4 or 5 different drive shafts before switching to aluminum. The whole firing system needs a redesign. It does work, but I think a redesign would really let it shine.