The event typically features artisans showing off their trades as well as the park focal point, a 1914 steam engine.

As the liquid turns to gaseous nitrogen at around -196 C, [The Action Lab] figured that it could be used to propel a simple steam engine at room temperature. Testing this out had amusing results.

The can serves as a steam chamber for the sterling engine. A cam rod, piston, and valve are all fashioned from paperclips, along with the support structure that holds them in place.

“I like the hidden mystery of that world,” Crummett tells Co. Design. “When a steam engine, for example, is operating, by god you know something is happening!

A steam engine could be heard in downtown Macon this weekend, a sound welcomed by train enthusiasts of all ages. Crowds gathered to ride the Nancy Hanks Special on trips from Macon to Tennille at ...