What can be done to prevent the veneer from curling up as soon as its laid onto the glue and substrate?
Veneers have a tendency to curl up quickly when they are placed upon a glue-prep’d substrate. Veneer softener won’t work and sometimes spritzing the top surface with water creates problems in and of itself. I use a few small pieces of blue, “clean release” masking tape to hold the edges down. I place a few strips on the top edge of the veneer before putting it on the substrate. I press the tape around the edges of the substrate as soon as I put the veneer down. Note: Once under vacuum pressure, the blue tape really sticks well to the veneer so removal can be tricky. So apply as little tape as possible for best results.