Moulder Feed Problems 3: Caused by Tooling

      A problem-solution checklist chart for correcting moulder feed problems. November 27, 2006

Reprinted with permission from Diehl Machines,

Probable Cause How to Correct

Dull knives.

Dull tooling makes the machine work harder. Keep the knives sharp.

Too heavy of a joint on knives.

When the joint on a knife is more than 1/32" the machine works harder. Never run tooling with more than a 1/16" joint.

Cutterhead on backwards.

Check tooling when installing on the moulder.

Cutterhead not on the machine.

If a spindle is not being used and the cutterhead is not turning, be certain the guides or bed plates are even before and after that cutterhead.

Wrong cutterhead on machine (cutterhead too narrow).

The knives in the cutterhead must cut across the entire width/thickness of the material.

Too few knives in cut.

The fewer knives in a cutterhead the bigger the chip load per knife. When running faster use more knives in the cutterhead.

Too large a diameter on the first bottom cutterhead for the diameter of the reference cutter.

If the first bottom cutterhead is too big in diameter, then the cut made by the reference cutter will not be higher than the reference guide. The material will hit the top of the reference guide.

To view the other articles in this series, see:
Moulder Feed Problems 1: Caused by Machine
Moulder Feed Problems 2: Caused by Material

Reprinted with permission from Diehl Machines,

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 © 1996-2019 - 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