International Association of Penturners - View Single Post - tooling for threading
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Old 05-05-2018, 04:30 PM   #3 (permalink)
More4dan's Avatar
Join Date: Mar 2016
Location: Katy, TX
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Default tooling for threading

You can make your own internal threading tool using drill rod. Machine a 60 deg taper from both sides and grind it down just past half way and on the back side leaving a 60 degree tip on a small diameter rod. Taps are so much easier to use and repeatable though.
You will have to heat above where the steel no long sticks to a magnet and quench to harden.


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Last edited by More4dan; 05-05-2018 at 04:31 PM.
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