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C2' or 'C3' on Blades and Bits: What's It Mean?
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Q: I see several blades and router bits with "C2" or "C3" tips. When I ask local woodworking shops to explain the difference, no one knows. Can you tell me the difference?
John Brock: From http://www.bullsharp.com/what.html:
"C-4 may be fine for cutting manmade wood products (MDF) and plastics, but C-2 should be used for ripping or with non-ferrous metals. The manufacturer of the tool usually selects the proper grade and type of carbide for the tool's application. It is best to discuss your application with your supplier so that you purchase the proper tool."
Carol Reed: That is the hardness rating of the carbide. For the hobbyist, it is relatively unimportant.
This article originally appeared in the Woodworker's Journal eZine.
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Copyright; 2010 Woodworker's Journal
All rights reserved. No part of this article may be reproduced in any form or by any electronic or mechanical means, including information storage and retrieval devices or systems, without prior written permission from the publisher.
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