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Rifles, Reloading, Optics, Equipment
Gunsmithing
Shear grinding Lathe tools
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<blockquote data-quote="Gord0" data-source="post: 1471762" data-attributes="member: 99696"><p>Ive never turned a stainless barrel, but I would try a .03" rad max for roughing it in, and then switch over to an aluminum grade and profile inserted finisher with a sharp edge and a .007" rad. Run it around 1000rpm with a .002-.003 feed. </p><p>I'm sure your method works well, you turn out some great work. Mine is just a suggestion, and may look like crap if attempted. </p><p>Not sure if these part numbers are correct, but the pictures are what I would try. I would also use an uncoated tool, as the coating dulls the cutting edge.</p><p>Edit: up the feed to .004-.006 with light cuts if some smearing occurs. Coolant/cutting fluid in a constant flow highly recommended to keep the fine chips from wrapping back around and making smear marks. For the same reason I would go with the 30° diamond insert. It keeps chips from wedging and smearing the area you already cut.</p><p></p><p>[ATTACH=full]103658[/ATTACH] [ATTACH=full]103659[/ATTACH]</p></blockquote><p></p>
[QUOTE="Gord0, post: 1471762, member: 99696"] Ive never turned a stainless barrel, but I would try a .03" rad max for roughing it in, and then switch over to an aluminum grade and profile inserted finisher with a sharp edge and a .007" rad. Run it around 1000rpm with a .002-.003 feed. I'm sure your method works well, you turn out some great work. Mine is just a suggestion, and may look like crap if attempted. Not sure if these part numbers are correct, but the pictures are what I would try. I would also use an uncoated tool, as the coating dulls the cutting edge. Edit: up the feed to .004-.006 with light cuts if some smearing occurs. Coolant/cutting fluid in a constant flow highly recommended to keep the fine chips from wrapping back around and making smear marks. For the same reason I would go with the 30° diamond insert. It keeps chips from wedging and smearing the area you already cut. [ATTACH=full]103658[/ATTACH] [ATTACH=full]103659[/ATTACH] [/QUOTE]
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Shear grinding Lathe tools
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