Distressed Black Glaze over Conversion Varnish

      Advice on a finishing schedule for black glaze in combination with a conversion varnish. March 29, 2006

We have a desk that we stained and finished with ML Campbell Krystal. The customer now wants a distressed look with black glaze. Can I just glaze then finish with Krystal? Or do I need to use vinyl sealer between glazings? Can I use the vinyl sealer over the Krystal?

Forum Responses
(Finishing Forum)
From contributor A:
You might want to try this. Spray black Amazing Glaze on top of what you have now. Distress the piece by manipulating the glaze to the desired look. Then top coat it again with Krystal. I would do a back of a door to check it all out for looks and adhesion.

From contributor B:
If you are going to use an oil based glaze then you will need to use a vinyl sealer. I stain then shoot vinyl sealer, glaze, then apply a washcoat of vinyl, then topcoat. The washcoat usually has to be applied within several hours of glazing. Some glazes can be thinned with mineral spirits thus avoiding the need for vinyl. It's best to ask your distributor about this. As stated, Amazing Glaze is another alternative to using vinyl.

From contributor C:
Use the Amazing Glaze over a post cat because of its aggressive solvents. If you use the oil glaze your best bet is to shoot a 1 mil coat of Water White Vinyl and then immediately spray the Krystal at full thickness. This gives you the barrier you need and if you have to sand the top coat you're sanding a thick coat of Krystal instead of a thin coat of Vinyl - if you cut through the vinyl you would expose the glaze.

You can avoid the vinyl if you cut the glaze with mineral spirits (2 parts glaze to 3 parts thinner) but only if the glaze that you're leaving on the piece is quite thin. If you have thick build up in corners, moulding profiles etc. the Krystal will craze without the vinyl. Your best bet is 1 mil WW Vinyl then topcoat. Don't use their NC based vinyl which will cause the Krystal to crack.

From contributor D:
How many coats of Krystal do you have on the piece? If you have no more than two, then scuff the Krystal, spray with Amazing Glaze, remove the glaze to the desired effect with maroon Scotch Brite, and top coat with Krystal.

From contributor E:
You have 3 choices in using glazes. Wet glaze - oil or water base (wiping), and dry glaze - lacquer base (spray). We do glaze everyday on custom production finishing. Dry glazes really look good over painted wood but not on stained wood. Try using wet glaze (water base) - it goes well with Krystal, and there’s no need to seal it with vinyl before topcoat.

From contributor F:
I use Sherwin-Williams wiping stain concentrates and thin them slightly with mineral spirits. I have never had any topcoat problems, even Conversion Varnish coats well.

From contributor G:
I would do exactly what contributor D said. My finishing schedule is: stain, sealer, Magnamax, glaze, Magnamax. That is what the specs say to do. I am sure that Krystal is the same procedure.

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: 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