Model 4 stroke engine

This is a model of a four stroke engine with a cut to see inside the engine. The model was designed to illustrate the function of a four-stroke engine.
The timing belt, spark plug, springs for the valves and the screws were purchased. All other parts were printed from PETG
Brass threads were melted for the screw connections (ruthex M4/M5).
If you need more information, feel free to contact me.