I have a piece of stained red oak plywood that is 1/4" thick and ~ 1 square foot in area. I will be gluing it to a 1" x 2" red oak board. Both the plywood and board have been stained and finished with polyurethane and there will be no weight attached to the glued on section of plywood. I'm using Titebond III Ultimate Wood Glue. Can I expect the glue to bond tight enough to hold the plywood to the board?
Wood – Will wood glue hold two pieces of wood with a polyurethane finish
adhesivepolyurethanewoodworking
Related Solutions
The traditional tool is a block plane. This is basically a chisel protruding through a smooth flat base that solves the evenness problem.
A variation on that is a tool like a Sureform. This is a hand tool that has numerous small chisel-like edges that shaves of curls of wood.
In either case, once ytou have removed most of the stock, you can finish the edge and get it smooth with the plywood by using a hand sanding block or an orbital power sander.
All of these approaches are a but slower and more work than a router, but do not require specialty tools (and give the special satisfaction that comes with working on wood by hand).
You should not do this. Foam insulation (EPS, XPS, etc.) needs to be covered with drywall in order to protect it (extend the amount of time before it melts) from fire. Otherwise you are risk of being exposed to toxic fumes and melting foam should you ever have a fire. Imagine molten foam dripping from your ceiling onto you - not a situation you want to find yourself in.
The correct "solution" is to drywall on top of the foam (using furring strips, or long screws into the studs), mud/tape the drywall, prime, and then apply wall paper using standard wall paper adhesives.
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Best Answer
Bonding anything together without sanding either down to bare wood grain, or at least scuffing the finish surface prior to bonding, will be tenious at best. Having said that, if all you are trying to do is glue them together so one for not move, the bonded material is not weight bearing or subject to vibrations....it might work for a while.
Your choice of glue, in my opinion, is designed for glueing unfinished woods together (for the woodworking craft). Once the grain is sealed by the finish, a different type of bonding is required.
Construction adhesive or a dab of silicone might provide a better, longer lasting bond.