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No. 3 Polished Finish

No. 3 Polished Finish is also known as grinding, roughing or rough grinding. This finish is coarse, and usually is a preliminary finish applied before manufacturing. No. 3 is an intermediate polished finish, with examples including grinding gates off of castings, deburring or removing excess weld material. It is applied by using 36–100 grit abrasive.

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