When I was still living with my parents, I had an old kitchen table, with a sheet of 3/4" plywood , then carpet padding, then 1/2" tempered glass (3' x 6'). I placed the plans under the glass, and used weights and magnets to hold things in place instead of pinning. Glue comes off the glass with a razor blade, the plans never have a chance to get dirty, and they are easier to read than through wax.