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 : Crossbanding over solid poplar substrate
Posted : 2012-03-14 7:03 AM
Post #36599
On a LinkedIn group discussion one person said she always makes substrate from 3/4" thick quartersawn poplar strips 1" to 1 1/2" wide, crossbands both sides, then applies show veneer to each side. Why wouldn't this have internal stresses, and would a rigid glue and the crossband avoid eventual failure?


 
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Darryl Keil

Posts: 1455

Joined: 2003-05-22
Location: Maine

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Subject : RE: Crossbanding over solid poplar substrate
Posted : 2012-03-15 3:28 PM
Post #36600 - In reply to #36599
This sounds similar to a product that has been around for many years called lumber core plywood. I'm not sure its even made anymore. From my understanding the core strips were not glued to each other so the movement was within each strip, similar to a hardwood floor.

Darryl Keil


 
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craig tufankjian

Posts: 308

Joined: 2004-02-01
Location: syracuse ny 13208

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Subject : RE: Crossbanding over solid poplar substrate
Posted : 2012-03-15 3:47 PM
Post #36601 - In reply to #36600
The chinese threw us a bone a while ago. First it was just decorative, now it's looking like the end all substrate to veneer over. If you got the budget it's a charm to veneer and work with,particularly when doing large carcass work table tops ect.... Bamboo plywood. 100 ,times better than lumber core.

http://i244.photobucket.com/albums/gg28/customone/file.jpg


 
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mike mcnerney

Posts: 87

Joined: 2003-07-17
Location: ottawa ontario

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Subject : RE: Crossbanding over solid poplar substrate
Posted : 2012-03-17 7:04 AM
Post #36605 - In reply to #36601
I had a friend who made his own lumber core out of poplar & he definitely glued it together, crossbanded both sides & then did the face veneers. He also sawed all his own veneer to avoid micro checks & used only epoxy.
I'm pretty sure the core, on lumber core was glued together.
We have a product available in canada from Robert Burys that has some similarities though I can't remember what it's called.
Total about 3/4" thick. Imagine a piece of 1/2" hardwood plywood, ripped to a bunch of pieces 1" wide, then the whole thing is glued back together & sanded level. It is then crossbanded & then face veneers applied. It is pretty heavey & reasonably flat, probably not as flat as mdf.
MM
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