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Forum topic by rman posted 12-28-2020 01:37 PM 274 views 0 times favorited 3 replies Add to Favorites Watch
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rman

2 posts in 65 days


12-28-2020 01:37 PM

I am thinking of resawing some green wood that has not been dried into thin (1/4” to 3/8” thick) sections and then glueing them to a substrate of dried wood. Has anyone tried this and can comment on whether or not it would be a way to utilize the green wood without waiting for it to dry. It seems to me that the dried substrate would keep it from splitting and warping as the veneer layer dried, and would keep shrinkage of the overall assembly to a minimum. The wood will be used in a stringer for a curved staircase.


3 replies so far

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Aj2

3678 posts in 2809 days


#1 posted 12-28-2020 01:50 PM

I’ve never tried something like that. If you can get a decent resaw surface from wet green wood it would be interesting to see what happens when it dries glued to something dry.
Let us know what your results are if you try one or two.
Good Luck

-- Aj

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Wildwood

2945 posts in 3146 days


#2 posted 12-29-2020 09:45 AM

Don’t know where you live or species of wood talking about buy not sure your idea will work. Wood is never as dry as we think! Drying wood merely a water removal process by or thru evaporation with air circulation! Wood shrinks as it dries. You want to allow that wood to shrink or reach EMC for your locality!

See chapter 13 figures 13-1 & table 13-2 on page 13-4:
https://www.fpl.fs.fed.us/documents/fplgtr190/chaper_13.pdf

If you slab that wood, sticker correctly with adequate weigh allowing air circulation that wood will reach EMC lot faster. JMHO, thinner slats mo better but that’s just me!

If you are good and with right species of wood might get away build jig with bend or curve you need and using ¼” or less slabs not exactly at EMC for your area gluing & clamping until dry. Even at EMC might need to build a homemade steamer so can get right bend or curve to prevent cracking or splitting.

-- Bill

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rman

2 posts in 65 days


#3 posted 01-01-2021 03:12 PM

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Thanks for the replies. I have glued up a sample of the wood and, so far, I have not noticed any warping or cupping. The glue appears to have bonded well.
There is a small check in one of the knots in the cedar, but that would be acceptable in my finished project. The veneer is a piece of Eastern Red Cedar approx. 1/4 inch thick, and the substrate is a piece of Southern Yellow Pine, approx. 13/16 inch thick. I flattened the pine with a jointer and then planed it to thickness. The cedar was cut with a bandsaw and then planed to thickness. The original moisture content of the pine is approx. 10%, and the starting moisture content of the Cedar was over 25%. After a few days with a fan blowing on it the moisture content of the veneer is down to around 12 to 15%. The further I push in the pins to the veneer, the higher the moisture reading. I used Titebond 3 waterproof glue, so I do not expect any significant moisture to migrate from the veneer layer to the substrate.

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