1750 RPM Grinder & Chisel Sharpening

Never Enough Money · 2005-05-01T21:55:09+00:00

I need to get the initial edge on new chisels (the "hollow grind").Everything I've read says to use a slow speed grinder with aluminumoxide wheels to prevent overheating of the steel (which ruins thechisel).I've been told that the grinder should not exceed about 1200 RPM. Onelocal woodworker actually keeps a cup of water next to his slow speedsuper expensive Baldor grinder. He grinds for about 5 seconds, dips thechisel in the water to cool it, and repeats the process.I currently have an $70 Delta 1750 RPM grinder. I can get aluminumoxide wheels for it, too. How risky is it to use it?I'll have the cup of water to prevent overheating.....

May 01, 2005 21 Replies

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Never Enough Money 21 years ago

Thanks for the good answer, Robert.

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Never Enough Money 21 years ago

Useful site. Thanks for the reference.

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