
The only choice! Many woodworking shops (Woodcraft, Grizzly, etc.) sell threading die sets that use a thread box to cut external threads. I bought one from Wood River which was utterly incapable of making clean carvings in hardwood. He just ripped the strings out whether I used lube like they suggested or not. Then I tried single point tapping on a screw lathe. Same result: the low cutting speed required to cut an 8-speed thread simply snapped the wood. I think I could turn the threads on a lathe if I made 0.001" notches, but that's impractical. Then I bought a Beall kit and it worked great. in your router, fed by its jig at the correct pitch. The idea works so well that I am going to adapt it to my lathe with a slide mounted pneumatic die grinder so I can then cut threads of any size and pitch I want then I don't have to buy an expensive one for every set of threads I want to cut buy set

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