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Rifles, Reloading, Optics, Equipment
Gunsmithing
Shear grinding Lathe tools
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<blockquote data-quote="J E Custom" data-source="post: 1472164" data-attributes="member: 2736"><p>Again , Thanks to all for all the post.</p><p>It did help and I now feel that the shear grind is realy no better than the high speed steel tools for finishing a barrel. I modified my normal procedure and the Last contour I did was the best. it surpasses the sanded finish by a large margin.</p><p></p><p>The shear grind tools did a nice job but was to slow. (On the 416r I could only take .002 thousandths cuts to get the outcome i was looking for) and some barrels require up to .200 thousandth removal and it would be to slow. On softer alloys, it works great and .006 or .007 thousandths cuts still work good.</p><p></p><p>I use carbide inserts to rough cut and .030 to .040 cuts are possible and then switch to the high speed tools for final finish. I did increase the spindle speed as much as I could stand and the results were better. </p><p></p><p>Now I have a way to re-contour barrels true and don,t have to sand and take a chance of messing it or my Lathe up. I promise to post some pictures as soon as i can.</p><p></p><p>Everyone has been very helpful.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1472164, member: 2736"] Again , Thanks to all for all the post. It did help and I now feel that the shear grind is realy no better than the high speed steel tools for finishing a barrel. I modified my normal procedure and the Last contour I did was the best. it surpasses the sanded finish by a large margin. The shear grind tools did a nice job but was to slow. (On the 416r I could only take .002 thousandths cuts to get the outcome i was looking for) and some barrels require up to .200 thousandth removal and it would be to slow. On softer alloys, it works great and .006 or .007 thousandths cuts still work good. I use carbide inserts to rough cut and .030 to .040 cuts are possible and then switch to the high speed tools for final finish. I did increase the spindle speed as much as I could stand and the results were better. Now I have a way to re-contour barrels true and don,t have to sand and take a chance of messing it or my Lathe up. I promise to post some pictures as soon as i can. Everyone has been very helpful. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Shear grinding Lathe tools
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