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cement vertical mill diagram vs four facet drill grinding ji

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cement vertical mill diagram vs four facet drill grinding ji

Drill SharpeningOn TheQuorn Four Facet SharpeningThe 4Facet point, as seen here, is formed bygrinding two flat areas(facets) on each land The first is shallow; 80 degrees relative to thedrill axis, representing a relief of 10 degrees from the plane of thedrill tipBehind this is ground a secondary relief of 25 to 30 degre...

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