A good quality wood glue works, I like to use a slow drying epoxy (the 24/hr stuff) it leaves a long work time. A little goes a long way or you have a big sticky mess though. If you do paint cement on the bottom do it after you do all the routing, So your bit doesn't carve a groove in your glue.... **Fun fact, If your laminating up to a painted edge, tape a piece of plastic banding strap along the edge for the bit to ride on, This will leave a overhang in your laminate you can file down by hand. leaving a nice finished edge.