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contact adhesive for thick veneer12/7
We are currently cutting our own bookmatched veneers for applying to finished end panels of kitchen and bath cabinets. Thickness is in the 1/8-3/16" range with butted edges, slightly broken with sanding. We have been using contact adhesive to apply these to the prefinished 3/4" plywood ends, but I've started thinking, maybe this might not work best, long term. Anyone else had experience doing this or have advice?
3/16" solid wood acts like wood, not veneer. Rules I've seen say that you need to get to 3/32" or less for it to act like veneer. So expect lots of wood movement from the thick panels, and I would say glue failure or seam gaps at the least with furnaces running this winter. Maybe you are in Florida and it won't be so bad, but I think failures even there.
Contact glue is never good for veneers, despite what some may say/do. It is a non- rigid glueline and will allow creep. People use it out of ignorance or desperation, not because they looked at the spectrum of glues and selected it as the best product for the job.
As for the shop made veneers, at some point they will want to act like solids. And then move. However, I have laid them on panels (MDF, plywood) on both sides for balance construction, and had no problems, in over 30 years. We use Unibond 800 or another type of plastic resin glue and a vacuum bag for most of this.
Just sticking them on (prefinished?!?) end panels (one side) with contact is not good long term. Your instincts are good.
I 2nd everything DS said.