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Rifles, Reloading, Optics, Equipment
Gunsmithing
Reamer Malfuction
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<blockquote data-quote="Trickymissfit" data-source="post: 795299" data-attributes="member: 25383"><p>I've managed to do the samething when step reaming holes more than I'd like to remember. Looked at all sources for the trouble, and it always came back to two or three things. Excessive tool pressure due to the coolants breaking down, and chip build up. My boss told me once to actually take an Arkansas stone and dull the reamer a little bit, and that helped. On production lines you often see this, and almost everytime it's surface speed related with an excessive chip build up in the flutes. Remember that your really cutting with the entire surface of the reamer instead of simply reaming a strait hole. You didn't say what material you were reaming, but one has to think stainless steel, and that stuff can often get kinda gummy like like (like reaming 1010 thru 1020CRS). An undersized hole your following will also cause you havoc.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 795299, member: 25383"] I've managed to do the samething when step reaming holes more than I'd like to remember. Looked at all sources for the trouble, and it always came back to two or three things. Excessive tool pressure due to the coolants breaking down, and chip build up. My boss told me once to actually take an Arkansas stone and dull the reamer a little bit, and that helped. On production lines you often see this, and almost everytime it's surface speed related with an excessive chip build up in the flutes. Remember that your really cutting with the entire surface of the reamer instead of simply reaming a strait hole. You didn't say what material you were reaming, but one has to think stainless steel, and that stuff can often get kinda gummy like like (like reaming 1010 thru 1020CRS). An undersized hole your following will also cause you havoc. gary [/QUOTE]
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