[Camden Bowen] recently 3D printed a single-piston engine which nearly worked, and is back with some improvements to it thanks to a small carburetor. The carburetor itself isn’t 3D printed ...

The engine is based around a single piston and runs on compressed air. The reduced parts count is a result of using the propeller axle as a key component in the engine itself. There are flat ...

Slowly but surely, 3D printing is making its way into ... In the real world, this allows the pistons to handle higher engine speeds for an increase of up to 30bhp, whilst also increasing efficiency.