Heat-drying conversion varnish
Conversion varnish requires a warm environment for timely drying. April 8, 2000
We are thinking about switching from a catalyzed lacquer finish to a conversion varnish. Some say we need to heat cure the varnish, others say air drying is all we need to do. What are the advantages and disadvantages of heat drying?
Conversion varnish is a thermoset finish, meaning it cures faster with heat.
You need to be careful how high your temperature is, because that will play a role in determining how much catalyst to use. This varies further based on the manufacturer. I would recommend checking with your product rep for specs. All products have different requirements.
The comments below were added after this Forum discussion was archived as a Knowledge Base article (add your comment).
Comment from contributor A:
We use Sherwin Williams CV and force dry the product at 120 degrees. Depending on the number of coats used drying time varies from 1/2 hour to 3 1/2 hours. We use 1 oz. catalyst per 1 quart of varnish.
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: Finishing: General Wood Finishing
KnowledgeBase: Finishing: High Speed Production
KnowledgeBase: Knowledge Base
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.
335 Bedell Road
Montrose, PA 18801
Copyright © 1996-2020 - WOODWEB ® Inc.