Full-bodied router bits
Advantanges and disadvantages of the full-body design. February 12, 2001
Some of my router bits have the new "full body" design. I find this annoying as I can't hold the bit against the wood to check the profile before I make the cut. Is there any advantage to this design?
This type of design is being advertised by some manufacturers as a safety feature, as it will limit the depth of cut that each tooth may take per revolution. This feature has more merit when used on larger diameter bits, such as panel raisers. Another advantage is that these bits should be more forgiving against kickback. Woodworkers, however, should not use this as an excuse to relax safe work practices.
On the down side, tools with the "full body" design can not be sharpened with a normal diamond cup wheel. A special diamond dish wheel is required, which sometimes "flexes", and may cause the tooth to take on a convex or concave shape. These full bodied bits are more expensive to maintain. Some say the extra mass at the top increases the chances of bending or breaking the bit. Also, if the body is limiting the amount of cut, then it must be rubbing the steel against the wood, creating heat, which is the primary cause of carbide losing its edge.
Frank Finan is owner of Top Shelf Tools
Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?
Have you reviewed the related Knowledge Base areas below?
KnowledgeBase: Solid Wood Machining
KnowledgeBase: Solid Wood Machining: General
KnowledgeBase: Solid Wood Machining: Tooling
KnowledgeBase: Solid Wood Machining: Tool Grinding
KnowledgeBase: Knowledge Base
All rights reserved. No part of this publication may be reproduced in
any manner without permission of the Editor.
Review WOODWEB's Copyright Policy.
The editors, writers, and staff at WOODWEB try to promote safe practices.
What is safe for one woodworker under certain conditions may not be safe
for others in different circumstances. Readers should undertake the use
of materials and methods discussed at WOODWEB after considerate evaluation,
and at their own risk.
335 Bedell Road
Montrose, PA 18801
Copyright © 1996-2013 - WOODWEB ® Inc.