Feed Roller Pressure and Chip Dents

      A review of factory specs helped a woodworker eliminate some quality problems with a 15-inch planer. September 5, 2011

I acquired a 15" Shop Fox planer about five months ago but it doesnít feed properly. It planed nice but it was difficult to get any kind of consistent results. I took some time and tried to read the manual. I noticed the feed rollers made contact with the wood but the knives were like almost what looked like an 1/8" higher. I raised the feed rollers to reduce the pressure by eye ball. The chip breaker was as low as the knives and may have been rubbing on the wood so I raised it out of the way a bit.

I also followed the books recommendation of the tension nuts over the springs on the roller end tops. The machine feed and planed close to perfect with no chip dents noticeable yet. Iím currently planing some pacifica madrona. In conclusion I would say too much feed roller pressure may be a major contributor of chip dent syndrome and not really needed to feed stock adequately.

Forum Responses
(Solid Wood Machining Forum)
From contributor I:
It's always a good practice to keep machines adjusted to factory spec's. Excess pressure and improper chipbreaker placement certainly cause feed problems. While the chip dents are actually made by chips getting stuck between the rollers and the wood, it is generally a dust collection issue. The dust collection system should have sufficient CFM and air velocity to remove the chips as they are created.

From the original questioner:
Agreed. Also, the chip breaker may have been so close that it did not allow the dust collector to get all the chips, contributing to more dents. But all things considered the feed roller pressure setting does not have to be all that much extra beyond holding and feeding properly. This I believe is what was causing my dents and feed problems.

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: Solid Wood Machining

  • KnowledgeBase: Solid Wood Machining: Setup and Maintenance

    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 © 1996-2016 - 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