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Rifles, Reloading, Optics, Equipment
Gunsmithing
Cutting threads
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<blockquote data-quote="stangfish" data-source="post: 2246851" data-attributes="member: 14534"><p>Most important thing is pitch diameter. </p><p>If after threading the OD mic's too large when it was turned to correct dimension before threading use sandpaper judiciously to bring back to correct dimension. It is common for insert tools to roll an edge. Use a Cratex stick to polish threads to acceptable finish. I always like to start with making a test gauge to see what the maximum pitch diameter will thread smoothly into the action.</p><p></p><p>I use carbide based threading inserts and tooling everyday and I have never ran production. </p><p></p><p>Very few inserts, if any are solid carbide these days.</p></blockquote><p></p>
[QUOTE="stangfish, post: 2246851, member: 14534"] Most important thing is pitch diameter. If after threading the OD mic's too large when it was turned to correct dimension before threading use sandpaper judiciously to bring back to correct dimension. It is common for insert tools to roll an edge. Use a Cratex stick to polish threads to acceptable finish. I always like to start with making a test gauge to see what the maximum pitch diameter will thread smoothly into the action. I use carbide based threading inserts and tooling everyday and I have never ran production. Very few inserts, if any are solid carbide these days. [/QUOTE]
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Cutting threads
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