I recently glued down the burl veneer on our pocket, fridge, bathroom, and cabinet doors. It's not a difficult job if you have the correct tools - epoxy glue, a dentist's picking tool for mixing and applying the epoxy under the burl, painter's edging tape, a roll of wax paper from the kitchen, several variable-length slats of wood and shim pieces, and several types of compression devices to compress the glued veneer until dry - like a long neck locking C-clamp, a couple of hand screw wood clamps, deep throat C clamps, etc. The deeper the throats and necks, the better. I purchased the epoxy on Amazon; two 3.5-ounce bottles of 30-minute set-time epoxy (glue and hardener) that can allow mixing two drops or two 1/4 teaspoon amounts together... depending upon the amount needed for the specific job. Most of the clamps can be found at Harbor Freight. It took me several weeks to get all the veneer glued down... on average about 15 to 30 minutes each day, then let it dry for 24 hours. If I had more clamps, then the job would have taken fewer weeks.
I removed most of the cabinet doors to do their gluing on the kitchen countertop. I wish there was a way to easily remove the pocket doors because they can be a PITA... especially when working on the knees down near the floor. Several years ago I glued down the veneer with wood glue - I believe it was Contact Cement. That stuff is messy to use and difficult to apply into the crack under the veneer. I am hoping the epoxy will hold more years, and it's way better with which to work and apply.