Time and Temperature Curve to Kill Bugs

      Here's a little basic info on bug killing with heat in thicker pieces of wood in the kiln. June 22, 2012

Are there any charts or formulas showing the time it takes for heat to penetrate thicknesses of wood at specified temperatures? I have searched the net but must not be using the right search words.

Specifically I would link to know how long I would need to maintain 140 degrees to reach the core of a 10/4 board with 130 degrees in order to kill PPB/eggs? Also, how long if the temp were raised to 150 degrees? If I had such a chart/formula in the future I could use it for different thicknesses/temps.

Forum Responses
(Sawing and Drying Forum)
From the original questioner:
The wood is pecan (hickory) and it is air dried to 12 percent.

From contributor Z:
Boards that are average 3"x 6" take about eight hours at 140 degrees, and about six hours at 150 degrees. Boards that are average 3"x 10" take about nine hours at 140 degrees, and about six and a half hours at 150 degrees.

From contributor Z:
By the way - species, length, or current moisture content has nothing to do with how long it takes to kill bugs. It is all to do with how thick and wide your product is.

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: Primary Processing

  • KnowledgeBase: Primary Processing: Kiln Operation

    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