V8 fidget engine keychain

Mini v8 engine, pistons moving up and down when you are rotating the gear. I made it without piston rods and crankshaft to avoid complications in assembling and printing, i am using camshaft instead. Easy to print, easy to assembly. Great for car fans

Assembly notes:

Short video on instagram artemix2006
All printed parts fit tightly together after printing, ensuring a solid and stable construction