I recently received some veneer, and never having worked with the stuff before, I was wondering how to store it. What I have is 8' x 6" white oak quartered. Funny thing was I had it in the trunk of my car since I got it (for about a week). It was rolled up. I know the trunk of a car wasn't the best place for it. When I put in my shop with no heat or AC it was fine, but a week later it is starting to get wavy. I know it's a moisture thing, shrinking most likely. How does a person store veneer for a long period of time without this happening? Is there a way to flatten it again?
From contributor I:
Obviously a lesson was learned here. Never leave veneer rolled up for any amount of time. If you want to store veneer for an extended amount of time, I would suggest wrapping it in plastic (rolled out flat) and placing several boards on top of it. As for getting it flat, GF-20 is a product made by Borden specifically for this purpose, however it is a several step process. If you have a press, great; if not, you'll need a lot of boards. Another option is to get some new veneer and start over.
I use a roller to apply on large pieces or a trigger bottle for smaller sheets. I used a 2 gallon garden sprayer to apply the solution on some 40 large walnut crotches. They were given to me because they were so badly warped. So a roller was less than acceptable. I adjust the spray to fine, spray both sides, lay flat on plastic window screen, start stacking, with window screen separating each sheet. Add the necessary weight. As the sheets flattened I added more weight. It's now flat but not dry.
Separate the sheets and restack in reverse with newspaper, 3-5 sheets between each sheet along with the screen. Check it and change the paper as necessary. I change it at least once at the end of the first day. When I do it outside in warm weather, it reduces the drying time to half. I change the paper 3-4 times.
The paper never touches the veneer; always separate it with the plastic window screen. I flattened the walnut in fall 1999, and the remaining stock is still flat.