Fuzzy Finish with Ballnose Tool in Plywood

      Could be the bit is dull. But here's some advice on technique as well. May 13, 2013

I cut a fair number of flutes in plywood using a 3/4 radius ball-nose. I'm currently using brazed carbide but wonder if there is a better option. I'm getting too much fuzz, but I suspect that it's because my tool needs sharpening. Would a tool with replaceable inserts be a good idea? Should I consider diamond? Can such a thing be had with chip breaker geometry?

Forum Responses
(CNC Forum)
From contributor G:
It is likely that the fuzziness is occurring on the climb side of the cut. If you do two passes, one direction and then go back in the opposite direction it will cut off the fuzz. Or, like you said the bit might just be dull.

From contributor D:
Try doing a final pass only taking off 1/32" or so. If you aren't burning, a slower feed helps, but mostly the material affects fuzziness. Birch ply usually has fewer issues than say, meranti. I have used inserts ground to a mirror finish and have found them to cut much cleaner as well. Maybe your sharpener could help.

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: Knowledge Base

  • KnowledgeBase: Computerization

  • KnowledgeBase: Computerization: CNC Machinery and Techniques

    Would you like to add information to this article? ... Click Here

    If you have a question regarding a Knowledge Base article, your best chance at uncovering an answer is to search the entire Knowledge Base for related articles or to post your question at the appropriate WOODWEB Forum. Before posting your message, be sure to
    review our Forum Guidelines.

    Questions entered in the Knowledge Base Article comment form will not generate responses! A list of WOODWEB Forums can be found at WOODWEB's Site Map.

    When you post your question at the Forum, be sure to include references to the Knowledge Base article that inspired your question. The more information you provide with your question, the better your chances are of receiving responses.

    Return to beginning of article.

    Refer a Friend || Read This Important Information || Site Map || Privacy Policy || Site User Agreement

    Letters, questions or comments? E-Mail us and let us know what you think. Be sure to review our Frequently Asked Questions page.

    Contact us to discuss advertising or to report problems with this site.

    To report a problem, send an e-mail to our Webmaster

    Copyright © 1996-2020 - WOODWEB ® Inc.
    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.

    WOODWEB, Inc.
    335 Bedell Road
    Montrose, PA 18801

    Contact WOODWEB

  • WOODWEB - the leading resource for professional woodworkers

      Home » Knowledge Base » Knowledge Base Article