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 New Most Powerful Microscope – STEHM The Amazing Do Nothing Machine Machine Drills Square Holes This Machine Will Eat Your Car Science and Post-It notes power this Rube Goldberg machine Incredible bamboo crafting skills from Japan
