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Rifles, Reloading, Optics, Equipment
Gunsmithing
1/4-28 Tap
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<blockquote data-quote="Trickymissfit" data-source="post: 1163858" data-attributes="member: 25383"><p>There's a booklet you can get from the U.S. Dept. of Standards about threads, and thread fits. My Congressman got it for my dad. He gave it to me. A must have booklet.</p><p></p><p>Dull taps and chips crammed into the flutes are your enemy. You have to get rid of the chip, or if your lucky; the chip string. Gummy metals are a pain to machine normally. Let alone running a tap in it. This is where the tap fluid is critical. Best for small stuff is trichloroethylene 1.1.1. Threads come out tighter, but can also be tricky. Old ( when I was a kid) made their own using hog grease, sulfur, a trichloroethylene. I have seen them use turpentine instead of trichloroethylene. Threads come out a beautiful satin finish.</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 1163858, member: 25383"] There's a booklet you can get from the U.S. Dept. of Standards about threads, and thread fits. My Congressman got it for my dad. He gave it to me. A must have booklet. Dull taps and chips crammed into the flutes are your enemy. You have to get rid of the chip, or if your lucky; the chip string. Gummy metals are a pain to machine normally. Let alone running a tap in it. This is where the tap fluid is critical. Best for small stuff is trichloroethylene 1.1.1. Threads come out tighter, but can also be tricky. Old ( when I was a kid) made their own using hog grease, sulfur, a trichloroethylene. I have seen them use turpentine instead of trichloroethylene. Threads come out a beautiful satin finish. [/QUOTE]
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1/4-28 Tap
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