How big is the panel you need to veneer. If it's small, I use a couple of torsion boxes. If it's big, you can't beat a bag.
Glue choices are also affected by the size. If it's small, standard yellow glue on the substrate only will work. If it's big, yellow glue is too fast and you'll need something with more open time. Urea formaldhyde is good. See Joe Woodworker for some glue.
Do not use contact cement unless the veneer is paper backed.
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