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Old 05-28-2012, 09:23 PM
Roger Roger is offline
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Join Date: Dec 1999
Location: McMurray, PA
Posts: 5,891
Originally Posted by johnwright238 View Post
.... and put a 45 degree edge on the cutting side and a few steep passes on the backside.

As somebody noted, the angle for most blades is 30, or 33 degrees. 45 is way too steep. Also, I have never read anywhere that a blade should be touched on the backside (maybe a flat handfile to take off a burr, but never a grinding).

To answer the question: Yes, all new blades need sharpening. Usually, the manufacturing process includes a shear to take off the edge, but the shear does not make the blade sharp for cutting operations.
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