There are lots of machines out there that can cut holes in flat sheets of steel, but MarkGyver built a machine that can make cuts into the curved face of a cylinder. Using a high-heat plasma cutter and a chain-driven rotating holder, the computer-controlled system can make smooth cuts through the surface of a steel tube.
THE BEST Cutting
We’ve always enjoyed watching videos of wood being turned on a lathe. However, the carving part is usually done with metal tools. The guys from the Waterjet Channel wanted to see if the powerful high-pressure cutting tip of their waterjet could be used to smoothly sculpt a spinning piece of wood in the same way.
If you’ve ever gotten a paper cut, you know how sharp the edge of a sheet of the stuff can actually be. The Q shows us how rapidly spinning a disc of paper on an angle grinder can turn it into a circular saw. Needless to say, keep all fingers and toes away from this thing.