Mental Floss

Watch an Intense Friction Drill Melt Metal

Rebecca OConnell
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This impressive drill, made by ARVADEST, does more than just forge holes. While digging into pieces of metal, the tool also begins to melt the surface. As a result, the drill creates automatic rings around the holes. "Basically, you create your own inserts," ARVADEST writes on their YouTube page. "Drilling holes in many materials using a Formdrill tool is a productive process to create strong threaded connections. By forming with friction [energy], a hole is created and the wall thickness is increased." The carbide drill runs at about 2.500 rpm. 

[h/t: SPLOID]

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