International Association of Penturners - View Single Post - tooling for threading
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Old 05-06-2018, 11:09 AM   #10 (permalink)
More4dan's Avatar
Join Date: Mar 2016
Location: Katy, TX
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I use either W1 or O1Tool steel (drill rod). See this link: Making your own specialty taps. Bock 5 mm

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