It shouldn’t come as much of a surprise, then, that you can also still buy and build the Visible V8 model engine kit, first sold ... a well-known maker of cast-metal coin banks, and renamed ...

The $29.99 all-metal desktop Stirling engine kit ... V8 engine, such as pistons and a timing belt. The battery-operated engine sells for $89.99 and is functional when assembled. The model is ...