Roland Jollivet wrote: > Why not use a thread mill? > > I was wondering about them, in that instead of taps, one could fashion their > own mini fly cutter from HSS for thread milling. It will take a lot longer > to cut the thread, but for hobby CNC milling time is not usually a problem. > > For oddball threads, these are great. I bought a small single-row threadmill years ago, and did some tests with it. It worked great, and produced a perfect thread the first time. I have only used it a few times, as for any production work it is much faster to obtain the right tap and thread quickly. But for unusual thread combinations or one-offs it is great.
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