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 Building the Steam Controller, by Valve This 3D Printer Is an Artist That Paints With Light Professor Poliakoff inherits an inventors perpetual motion machine Useless Perpetual Devices Homemade Log Splitters Omnidirectional Conveyor Belt Is So Cool It’s Hard to Convey
