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Old November 12, 2012, 05:41 AM   #12
Join Date: January 15, 2011
Location: nh
Posts: 31
Keep in mind hammers are casehardened. Usually only about .060 of a hammer is hardened on the outside. The inside is relitivly soft. This makes it more durable. Grinding off the spur wont weaken it. Grinding on it in key stress areas will weaken it. It will eventually break.
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