Kiln Charge Cooling
Cooling lumber arter drying is not a critical step. June 13, 2014
I have read a lot about red oak kiln schedules and the importance of each step, as well as the importance of proper storage after drying. I have not been able to find much information about the importance of anything to do with the parameters of the cooling down phase. After conditioning is done, how fast is it okay to cool 5/4" RO lumber? Will stresses develop if it is cooled too quickly? Can pushing out a charge too warm counter-act the benefits of the conditioning? At what temperature is it okay to open the kiln doors? If the wood is re-sawn and is flat while still warm (i.e. 120F - 140F), can stresses show up later that are related to running the lumber too warm?
(Commercial Kiln Drying Forum)
From Gene Wengert, forum technical advisor:
Cooling, after drying is complete, is not considered to be a critical process. In fact, some people have been known to run the lumber into a plant within three hours of the completion of drying. A bad idea, but it has been done. So, open the doors and move the lumber into storage when you are ready.
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
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 © 1996-2019 - WOODWEB ® Inc.