Darryl Keil Last Activity 2025-09-09 11:09 AM
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Don Stephan

Posts: 825

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

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Subject : Flattening Failure, Again
Posted : 2004-04-29 8:54 PM
Post #31494

This was the second time veneer that I flattened using the water/denatured alcohol/glycerin/yellow glue insisted on developing buckles as soon as it was not weighted down. The first such experience was with an unidentified burl; this time was 18 sheets of olive ash burl. Followed all the steps religiously, the denatured alcohol is I think Kleen-strip brand, the glycerin is a bottle of pure liquid glycerin from a pharmacy. I started the flattening process on the olive ash burl on Monday of last week. Since last Saturday I have not used any more newspaper, but have kept it under a weighted board because I thought it was trying to buckle again. Working with it today, had to dampen both sides so that I could tape two sheets together. My expectation has been that once veneer has been successfully flattened it will stay flat indefinitely.

Can anyone suggest a procedure I can begin to try to learn what is causing this lack of success? Thanks.


 
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Darryl Keil

Posts: 1455

Joined: 2003-05-22
Location: Maine

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Subject : RE: Flattening Failure, Again
Posted : 2004-04-30 9:15 AM
Post #31496 - In reply to #31494

Don,

I hate to deny other forum users this conversation but I think you ought to give me a call, something is not right. I have a couple of pieces of flattened elm burl that I carry around and show students every year when I teach. I have had these samples for years and they are still quite flat. Not to mention they were hideously buckled before flattening.

You should not be having so much trouble. Call me.

Sincerely
Darryl Keil


 
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Don Stephan

Posts: 825

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

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Subject : RE: Flattening Failure, Again
Posted : 2004-05-03 5:21 PM
Post #31503 - In reply to #31496

After discussing this, it is suspected that the veneer was not completely dry when I started working with it. Darryl has always "clamped" veneer being flattened in a vacuum press, which likely helps remove the moisture. I was using plywood cauls and hand clamps. When I have some more veneer that needs flattening, I will try some both ways.


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