Here are all the steps I take to do a vacuum bag pressing with shop sawn veneer. I used Gorilla Glue also known at polyurethane glue or the shorthand is PU glue. PU glue is known for it being messy because it foams. I contain this mess by only applying glue to the substrate because it has a smaller footprint than the oversized veneer. Water must be added to activate the glue. A very fine mist + spraying the air above the panel helps to eventually distribute the droplets.