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Do laminated solid wood plies move like solid wood?3/25
This is a question about seasonal movement. I am designing a cabinet for a client in MN (I am in CA) whose top, bottom and one straight side are to be made of solid wood. The other side is to be curved. Originally I had intended to make the curved side out of bending plywood and veneer, but given the wide humidity swings the piece will likely see in MN, I'm concerned about the plywood-to-solid-wood joints. So, my question is, if I were to make the curved side out of 1/8" laminations of solid wood, and assuming all laminations had the same grain orientation, would the resulting part move seasonally like solid wood, or would the glue inhibit movement and still cause problems.
Any advice would be welcome. Thanks!
Thin plies will move just like their solid wood counterparts. A rigid glue line - or several of - may be cause for decreased movement, but I would guess the movement would not be restricted by even 50%, if any. Using quartered, rift or flat sawn will have a larger effect on movement than the glue line.
I might question the 'wide humidity swings' you mention. If it is for typical use in the home/commercial environment, modern HAVC will make for a very wood friendly situation. Granted, the Upper Midwest is quite different from CA, but once you move inside, they are similar.
Thanks, David. That was kind of my thinking, as well, but I just wanted a reality check from someone more knowledgeable. And I agree, the humidity swing comment probably is less relevant with modern HVAC .... I guess my thinking is still colored by childhood memories of Ohio summers! :)
Thanks again for the insight.
The outside relative humidity in July for Cleveland, OH is 71% RH; Madison, WI 72% RH; and Athens, GA, 74% RH.
In August, Madison and Athens are the same...75% RH. So, it is not more humid outside in my new location.
But the large humidity swing will be from CA to the Midwest that occurs the first few months. You need to target 6.8% MC.
The orientation of the boards in the glue up can at times affect the amount of wood movement.
To build furniture probably also you need training to do?
Thank you, for the question and sharing information. I do agree with David for his reliable solution. All the best!