Chinese Blacksmiths Use Massive Five-Story Hammer To Forge A Flange On The Street I don’t know why but I love watching machinery such as this huge five-story hammer. Facebook Prev Article Next Article Machinery Checkout these cool gadgets... Related Posts These Gears Are Synched at 4,500 RPM Professor Poliakoff inherits an inventors perpetual motion machine Big Marble Machine (1000 Marbles) The Only Handheld Printer You’ll Ever Need Impressive Metal Tube Bending Machine 5-Axis Metal Laser Cutter Is Satisfying to Watch