The $29.99 all-metal desktop Stirling engine kit is one of the simplest. It can be assembled in 15 minutes and is recommended for ages 14 and up. Also for $29.99 is the Exploring Kid Steam Engine Kit.

You can go with a rebuilt or remanufactured engine, purchase a factory-new one from the dealership, or build your own engine.

When your steam engine build requires multiple microscopes, including those of the scanning electron variety, you know you’re building something really, really tiny. All of the usual tiny ...

You might recall I pulled the cylinder head of the Jeep some two months ago to inspect the piston. In the end, I decided to ...