I finished this custom-built solenoid engine just in time for Christmas. Good thing, as I built it as a gift for my son, who always seemed to enjoy running my first custom-built engine. The engine is made from a hit and miss engine casting kit, a pinball machine flipper solenoid, two 12 volt batteries, and assorted custom-made parts. This time, I put it on a custom-made cart, built by a friend, as my wood-working skills are not at that level of craftsmanship!