However, [Attila Blade]’s version of a free-piston type Stirling engine is simple enough to be built in a matter of minutes. To build the engine you only need a test tube, steel wool ...

In the video after the break, [Brick Technology] uses LEGO to gain some practical insight into the world of piston ... rod. With the basics done, [Brick Technology] could start experimenting with ...

This creates an airtight seal in the engine's cylinder. The piston is placed into a machine that will marry the connecting rod and piston. Above it, a pin designed to connect the two components is ...