Keychain - Piston Engine

cults3d

I bring you a key ring of a simplified piston engine, which you can rotate by turning it with your fingers. Dimensions: 71x34x20 mm. The key ring is made up of 6 parts and 3 pieces of filament. It is designed so that once mounted, no part can slip out of place. Adjustment and tolerance between parts will be key to prevent them from coming off once assembled. It will be necessary to use glue in some joints (detailed in the photos).