woodbrains
Established Member
n0legs":unjedf14 said:
Hello,
The reason panels bow when veneering one side only, is due to 2 things. Addition of moisture to the substrate and stretching the moistened veneer, which tensions the panel when it eventually dries. Balancing veneers simply add equal and opposing additions of moisture and tension. However, if the panel is fully constrained by aprons or a frame of some sort, veneering one side is fine.
Hammer veneering with hot hide glue on one side only is acheivable. Simply place the veneered side down onto piles of old newsprint. Either get some stock not printed on, or place a sheet of lining paper over a stack of discarded newspapers so the ink will not transfer to the work. This draws out the moisture into the paper rather than into the wood. It slows the drying out of the veneer so the tension equalises less suddenly. The panel really will stay flat.
Another way is to use polyurethane glue, which adds no moisture and does not stretch the veneer. I would only do this for sawn veneers or non-porous commercial veneer in case of bleed through.
Mike.