November 17, 2025
Description
The wobbler engine is a fully functional, fully 3D printed oscillating air engine and this one has two cylinders! This compact mechanical marvel demonstrates the principles of oscillating motion and pneumatic power in a visually striking design. Perfect for mechanical enthusiasts, educators, and anyone fascinated by high-speed engines. Watch it spin up to incredible speeds when connected to an air supply. Ideal for display, experimentation, or as a functional demonstration of engineering in action.
Assembly is identical to the single cylinder wobbler engine except you have to repeat the process for another cylinder.
The engine may require slight sanding of parts to get the correct fit and super glue to connect the two halves of the flywheel to the crank. I strongly advise using glue stick on the print bed for better adhesion for the tall parts. I use a modified 2L drink bottle pressurized to 20 psi with a bike pump.
License:
Standard Digital File License