Darryl Keil Last Activity 2025-09-09 11:09 AM
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ed kolberg

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Joined: 2010-01-11

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Subject : veneer moisture content
Posted : 2010-01-11 5:06 PM
Post #35856
Does anyone know what moisture content walnut burl veneer should be dried to after softening and flattening so that it will remain soft yet not shrink after gluing to the substrate using unibond 800 or cold press glue? The parts I am veneering have 30 degree tapered edges of about 3/8 inches wide and the veneer has to bend over without cracking. . I have a moisture meter. The veneer reads 0% moisture before softening. After using the softener and letting it air dry for about 15 minutes the moisture content is about 24%. Each drying pass using paper towels and my vacuum press reduces the moisture content about 4% per pass. I can dry down to 0% again with about 6 passes but then the veneer is not soft at all and is again very brittle. Thanks for any replies.


 
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Darryl Keil

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Joined: 2003-05-22
Location: Maine

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Subject : RE: veneer moisture content
Posted : 2010-01-13 5:09 PM
Post #35864 - In reply to #35856
Ed,

What are you using for a softener?

Darryl Keil


 
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ed kolberg

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Subject : RE: veneer moisture content
Posted : 2010-01-14 4:45 PM
Post #35868 - In reply to #35864
Hi Darryl
I'm using Super Soft 2 by Better Bond. I'm also gluing the veneer within 2 days of treating with softener.


 
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Don Stephan

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Location: Cincinnati, Ohio

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Subject : RE: veneer moisture content
Posted : 2010-01-14 7:43 PM
Post #35869 - In reply to #35868
I found three web sites selling Super Soft 2. Two of the three said the veneer should be completely dry before gluing. Of course, the question is what "completely dry" means. One or both sites also said the veneer only remains soft for a short period of time after becoming "completely dry."
Perhaps you could contact the manufacturer for guidance on the meaning of 'completely dry," and let us know?


 
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Darryl Keil

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Location: Maine

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Subject : RE: veneer moisture content
Posted : 2010-01-17 6:49 AM
Post #35870 - In reply to #35868
Ed,

You really do want the veneer dry before pressing it. To get it to go over your angle without cracking I would wet it with a sponge right where this angle is. Do this after you have applied the glue and have set the veneer on the substrate. Just make a quick pass or two, until the veneer is medium wet at this location, immediately put it in the press. This way the rest of the veneer is dry and it will bend where you need it to.

Darryl Keil


 
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Brad

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Joined: 2008-04-22

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Subject : RE: veneer moisture content
Posted : 2010-01-27 7:13 PM
Post #35879 - In reply to #35870
This is more of a storage Q. I have had some Bubinga Swirl pieces sitting around for two years now, and even after softening with a full dose of veneer softener I still was not able to get them flat enough to work with. Can you ever get veneer too dry? I have not tried working with this stock lately, but every time I remove them from the shelf above to get at something, they are in my way.

Brad


 
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Darryl Keil

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Subject : RE: veneer moisture content
Posted : 2010-01-28 7:58 PM
Post #35884 - In reply to #35879
Brad,

Ive had veneer for years sitting in my storage rack and in the winter the veneer gets very dry. Have never had a big problem with dry veneer, except mahogany crotch which turns into potato chips over time.

I'm surprised the softening solution doesn't take care of the problem. Did you press the veneer flat between newspaper once you applied the flattener or just let it sit out in the open?

Darryl Keil


 
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Brad

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Subject : RE: veneer moisture content
Posted : 2010-01-30 3:42 PM
Post #35893 - In reply to #35884
I followed the method in your video, except I used a commercial softener. I will have to try it again someday. I just thought I would ask since the topic came up and the darn box almost fell on me last time I was getting things down.

Those crotch potato chips are none too tasty. I have some of those lying around also.

Brad


 
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Don Stephan

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Joined: 2003-07-18
Location: Cincinnati, Ohio

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Subject : RE: veneer moisture content
Posted : 2010-01-13 8:37 PM
Post #35867 - In reply to #35856
Ed:
Had a horrible experience once, where the veneer apparently wasn't complete dry after using flattening solution. Seams separated, spent hours with touchup powders hiding filler.
Don
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