Hole Punch Gun

thingiverse

This desktop toy, resembling a single hole punch, features in a video. Comprising of 5 pieces including pins, bolt, receiver, trigger, and sear, it weighs 50.1 grams and costs approximately $0.75 to make. The design was adapted from "Foam Dart Pistol" on Thingiverse (http://www.thingiverse.com/thing:7512), sharing similarities in trigger and sear designs. However, the creator modified it by replacing filament as a spring with a rubber band. As of now, the bolt head is not long enough for punching paper, and the rubber band should be attached near the muzzle instead of wrapping around the gun. The fourth revision has addressed the bolt's shortness and trigger guard plan, while the fifth revision added extra pin holes for larger rubber bands. Instructions to assemble are available in a video (http://www.youtube.com/watch?v=b6bk4KfecXE). Optional extras include printing a set of bolt pins for aesthetic purposes. Note that this project is still ongoing and not yet complete.