Alternative sear and rotor for Lilliput Rubberband Gun (by Parabellum Arms) by Bengineer

thingiverse

Bengineers' original thing required 5mm pins for the rotor and sear but I didn't want to go out and find/buy them. I originally tried to print the 5x14mm pins but wasn't happy with the result. I then drew a new rotor in Sketchup, ending up with a 1.5mm thick rotor half with a 5mm hollow pin (with a 2.55mm hole). To make the sear, I imported the original .stl into Sketchup Make and cut it in half and added a similar hollow pin as well. The halves of each piece are glued together using CA and then a wooden toothpick (I don't know if they're all the same size, but the ones I had on hand were nominally 2.5mm in diameter) is lightly coated in CA and inserted into the hollow as a reinforcement. The ends are trimmed off with a razor or x-acto knife. These fit a little loosely, but to be safe, I installed them with a few drops of oil for all of the moving parts. I'm not sure how strong the pins are - I hope the toothpick is adequate reinforcement, but just in case, I'm printing extra rotors for spares.