Laminating different species
In a triple lamination, it's OK to use two species of lumber, given a few conditions. 1998.
by Professor Gene Wengert
I am laminating three layers of 3/4" stock. Since only the exterior layers of the lamination are visible, I'm considering using poplar for the center. My question: is it all right to face glue different species in lamination? This piece will be placed in Tucson, Arizona.
It is okay to laminate different species so long as the top and bottom are identical thickness and species. It is okay to laminate under any conditions if the MC will never change--it is only when the MC changes that the different shrinkage could (but not always) cause a little warp.
Professor Gene Wengert is Extension Specialist in Wood Processing at the Department of Forestry, University of Wisconsin-Madison.
Click on Wood Doctor Archives to peruse past answers.
If you would like to obtain a copy of "The Wood Doctor's Rx", visit www.fdmbookstore.bigstep.com/ for more information.
The comments below were added after this Forum discussion was archived as a Knowledge Base article (add your comment).
Comment from contributor A:
When laminating 3 pieces, the 2 outside pieces must be of the same species and should be of same cut (plain sawn or quartered). The center core must be of a low density and not prone to a lot of movement. I do not think poplar is a good choice, as it is not very stable at various moisture levels. A better substitute would be pine, cedar or fir.
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: Lumber & Plywood: Wood Identification
KnowledgeBase: Wood Engineering: General
KnowledgeBase: Wood Engineering: Wood Properties
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 © 1996-2016 - WOODWEB ® Inc.