Choosing Glue for an RF Edge Gluer

      Selecting suitable adhesives for fast application and curing. May 4, 2005

We recently purchased an L&L RF edge gluer. Does anyone know what kind of glue we should use for gluing pine panels? I've heard you have to use some kind of additive to mix in the glue specifically for an RF unit.

Forum Responses
(Adhesives Forum)
From Jeff Pitcher, forum technical advisor:
RF gluing equipment essentially heats the glue line in order to speed up the cure. Most adhesives intended to cure under heat will work fine. The two most commonly used adhesives are urea resin glues and cross-linking PVAs such as Titebond II or MPA II.

From the original questioner:
Thank you for your reply. We've tried Durolock from National Starch and they actually sold us some kind of hardener with it, so we mix it with the glue itself in some proportion. The problem is that it doesn't glue fast enough, not according to the L&L's specs, anyway. And we have a brand new RF tube so the power is certainly not the problem.

We've also been advised that in order to speed up the process we must use some kind of catalyst. Should I mix that into the glue or it is some kind of myth? Also it would be nice to know how much glue we should use for MBF of panels. We currently glue 2"X6/4" pieces into panels.

From Jeff Pitcher, forum technical advisor:
Durolock should work fine. Depending on the number, you shouldn't need to add additional catalyst. There are many cross linking PVAs that already have the catalyst in them. The biggest drawback to using this kind of glue is that you have to wait for it to cool before you can handle the piece being glued. A UF resin will give you a rock solid bond almost immediately. That might give you the additional speed you're looking for. A good rule of thumb for calculating glue spread is to figure 30-35 lbs per thousand square feet of glue line. This translates to about 300-350 square feet of glue line per gallon.

From the original questioner:
Thank you! Could you suggest any good UF resin glue for both regular and water resistant panels?

From contributor K:
I have an L&L GlueAll and have always used Titebond II with no problem. It's available everywhere and can be used all over the shop. We glue hardwood panels for doors (usually ash and oak) around 180 seconds, pullout and saw to size, then surface and raise. Sometimes the panels are still warm when we are raising them. Never any problems except with pine.

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: Adhesives, Gluing and Laminating

  • KnowledgeBase: Adhesives, Gluing and Laminating: Glues and Bonding Agents

  • KnowledgeBase: Adhesives, Gluing and Laminating: Gluing and Clamping Equipment

    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 © 1996-2021 - 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