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Rifles, Reloading, Optics, Equipment
Gunsmithing
Cutting threads
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<blockquote data-quote="Alex Wheeler" data-source="post: 2248533" data-attributes="member: 101859"><p>Different grades of carbide have different edge preps. Some are dull for heavy cuts and have to be run hard and fast to get a good finish. Others are razor sharp like tools meant for aluminum and you can leave a great finish with light cuts and almost any speeds. I typically thread with carbide at 180-275 rpm, but can go slower and still get the same finish, it just takes longer. I chamber at 275 with hss reamers. I have a few carbide reamers too, I run them at the same speeds. Edge prep is everything in carbide and theres people that make a living knowing what tools to use for what jobs. Since most tools are not made for what we are using them for, its trial and error to find the ones that work. I do think hss makes the most sense for the hobbyist unless you want the learning curve involved with carbide.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 2248533, member: 101859"] Different grades of carbide have different edge preps. Some are dull for heavy cuts and have to be run hard and fast to get a good finish. Others are razor sharp like tools meant for aluminum and you can leave a great finish with light cuts and almost any speeds. I typically thread with carbide at 180-275 rpm, but can go slower and still get the same finish, it just takes longer. I chamber at 275 with hss reamers. I have a few carbide reamers too, I run them at the same speeds. Edge prep is everything in carbide and theres people that make a living knowing what tools to use for what jobs. Since most tools are not made for what we are using them for, its trial and error to find the ones that work. I do think hss makes the most sense for the hobbyist unless you want the learning curve involved with carbide. [/QUOTE]
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