I am making a small recipe box out of red oak. The plan from Box By Box includes liners along the sides; the liners are 1/8 inch thick. I glued the liner to the side and applied 2 spring clamps. The liner warped and pulled away from the side of the box.
I have chiseled one liner out. Not fun! What should I do to avoid the liner warping during the next glue-up?
Replies
Hi,
if your liners are a snug fit with mitered corners. just secure them with a little glue on th bottom edge. They will be mechanically fixed at the ends and will not get moisture from the glue to encourage the warp.
Dave
use thinner veneer and/or thicker sides
Expert since 10 am.
z3,
The thin liners warped because they took moisure from the glue. To minimise the warpage, you could:
1- use a glue that does not contain water, such as epoxy, to bond the liner to the side
2- back up the liner with a piece of flat scrap (3/4" plywood for instance), and clamp, so that the liner can't warp, til the glue sets. If you work quickly, you may be able to do both sides, and clamp them together, liner-to-liner, with that piece of plywood, and waxed paper, or plastic (piece of trash bag) between them, to prevent their sticking to one another.
Note: be aware that depending on how thin the side itself is, the side+liner may want to warp after you pull the clamps. Some moisture from the glue is still in the wood, and may pull the liner side hollow as it leaves. The liner is, in essence, a veneer, and this is why veneering practice is to balance the construction with a veneer on both sides, to equalise the stresses set up by drying and swelling.
3- just "tack weld" the liner in place with a few dabs of glue, not enough to cause the warping. If the construction of the box is such that the liner is captured after assembly, this may be all that is needed.
Ray
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