Ultraviolet-Light Tracer Dye for Glue

      For easy detection of glue streaks before finishing, use a fluorescent glue or add a fluorescent additive. February 7, 2009

Question
I'm having a hard time seeing glue spots on Anigre wood before I stain it. Once I use a dark stain they show up like a sore thumb. Is there some type of light or filter to go over a light that would expose these glue spots?

Forum Responses
(Adhesive Forum)
From contributor B:

Here’s an article that might be of help.

** GET CORRECT CODE **

http://www.woodweb.com/knowledge_base/Inspecting_for_Glue_Drips.html

** GET CORRECT CODE **



From contributor K:
I am not experienced with the wood you are using, but I have found that when you run across a glue patch when you are staining, you can use sand paper and sand/stain the spot away. Use automotive wet/dry paper and use the stain itself as you sand. It works pretty well.


From contributor R:
I am the Works Manager at a door factory in Indonesia. We work with several pieces of veneers and are always on the lookout for glue bleed and spots. The only way we have found to detect glue spots before staining is to add an ultraviolet detectable dye to our glue mix before pressing the veneer. We add a product to our glue called Pluracene and it only requires a few drops. If we have glue bleed, seem lines on our panels or spots they show up clearly under a black light and then they just need to be sanded off.


From the original questioner:
This product Pluracene - do you have a link to where you get it?


From contributor C:
We make a product called WA20 that works as a standard yellow woodworking glue. For about the last 2-3 years, we have made it available with a fluorescent dye for just this purpose.


From contributor L:
You can buy a cheap hand held electric light and put a black light in it. This should do the trick. I have several customers that I sell the lights to and they convert with the black light bulb. Don't know if watts make a difference or not. I will look when I go for future reference. We have been doing this for about two years now.


From contributor O:
I can usually see the glue spots by wiping the wood with mineral spirits and they show up.


From the original questioner:
I have since ordered WilsonArt WA-20 yellow glue with a fluorescent additive for the same cost as their normal type. So if anyone else is looking for a solution to this problem try the WinsonArt WA-20 with additive.

I have also tried the alcohol wipe and that does seem to bring up most spots but not all. I'm hesitant to try the mineral spirits because of the finishing system we use and because the drying time of the spirits.



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: Finishing

  • KnowledgeBase: Finishing: General Wood Finishing


    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 © 1996-2017 - 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