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Old 09-20-2000, 10:28 AM
Oil_burner Oil_burner is offline
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Join Date: Jan 2000
Location: Orange, OH, USA
Posts: 56
The cross hatch type pattern is the result of type grinding process. My machinist buddy called it blanchard (sp?) ground. For larger surfaces, like a rotor, it results in a flatter surface. Suffice to say, a rotor ground in this fashion should be better.
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