Bud produces works of art! Wow.
An alternative is to buy a Wal Mart HDPE cutting board which is over size, and cut/route it to the correct size. Or buy a piece of Starboard and cut it to the correct size.
Amazon has 1/2" thick 12 x 18 HDPE cutting boards for about $ 14.
Walmart has cutting boards 12 x 18 HDPE for $10, probably 1/4 or 5/16 " thick?
Common wood working tools work well on HDPE,