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Thread: Annular cutter grinding
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8th August 2020, 10:50 AM #1Most Valued Member
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Annular cutter grinding
SAM_0677.jpgSAM_0675.jpgHello from Geebung.
The first pic has the after ground finish. I grind with 2 facets and all obtuse angles. This gives good life and some resistance to re engaging the work on top of chips. The second pic shows how it came in. Only 1 facet and one of the angles very accute. The saw shops don't realise metal cutting geometry is different. From the same shop I have seen countersinks offhand ground on a bench grinder and annular cutters reduced in diameter by grinding the margins on a linisher. At $42.00 ea.
Regards
BC
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