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 Interesting way to fix a dent – Miracle system demo This Tree Cutting Machine Is Monstrous (And Monstrously Satisfying) The World’s first wind tunnel- amphitheater “Flying Dream”, China Chinese Blacksmiths Use Massive Five-Story Hammer To Forge A Flange On The Street This Coffee Art Printer Puts Baristas To Shame Testing Ski Chairlifts Involves Destroying Them