Fast endless Bi-directional spiral with an ho scale train Powered by what appears to be seven HO-scale locomotives, Risner’s creation also works in reverse. Facebook Prev Article Next Article Machinery Checkout these cool gadgets... Related Posts This Tree Cutting Machine Is Monstrous (And Monstrously Satisfying) Garbage Truck Crushing a Car This One-of-a-Kind Machine has 588 Metallic Teeth Man Builds Tiny W-18 Engine Watch a Humongous Hungry Machine Crush and Swallow Engine Blocks The World’s first wind tunnel- amphitheater “Flying Dream”, China