Drop Hammer

prusaprinters

This is a motor driven drop hammer. It's my first attempt to print gears and to see how well they mesh. The arm is designed to hold an old D cell battery so that it may be raised by a cam and dropped onto an object like a walnut. It probably won't work but it helps pass the time. A battery holder will be added later. Gear reduction is around 64:1 so plan power supply accordingly. A worm gear would be better but I haven't found one I like yet. :-) 2021_03_06: Want to add legs to add a bit of stability and to get the hammer a little higher in the air? I added: -DH_Base_09 and -DH_Leg_02 Legs attach to base with M4 x 8mm flat head screws. Print Settings Printer Brand: Creality Printer: CR-10S Rafts: No Supports: No Resolution: 0.2mm Infill: 50% Filament: PolyMaker PLA Any Notes: -I used a 35mm dia Mabuchi DC motor with a 3mm dia shaft that I got from sciplus.com. It fastens to Bearing_Plate_09 with a pair of M3 x 10mm flat head screws: https://www.sciplus.com/12vdc-mabuchi-motor-56037-p -Any momentary-on push-button switch will work. -This thing actually works and I'll post a link to a short video eventually. But refinement is encouraged. Give a holler if you'd like files in another format but I'll probably post them somewhere else. -All shafting is 5mm. It's a good idea to file a flat where setscrews fit. -Print one each of everything but -Print three of the Cluster_01_v2 -Print four legs and use a brim to get better bed adhesion. Category: Gadgets