Once the veneer pieces are cut out they need to be glued to a backer.  I use 1/2 inch particle board as my backer and hide glue.  To ensure the pieces remain flat while gluing I use a veneer press – it is shown here.  The picture at the bottom left shows the hydraulic jack that is used to press the bottom plywood plate to the fixed top plywood plate.  The picture below shows the metal plates that the veneer is sandwiched between before pressing.