New Punch Tap Tool Quickly Forms Helical Threads. ... This design gives it a tool path about 1/15 th of that made by traditional cold-forming taps when making an M6 thread with a 15-mm depth.

Further, neither the notch nor the hole punch approach is a perfect design. Ideally, we’re moving towards completely bezel-less smartphones, with these designs serving as stepping-stones.

For 104 years, that's been the function of the Roper Whitney No. 5 Junior Hand Punch,a handheld tool that provides a quick, easy way to punch holes in metal.