Well got my cutting board done...well kinda...know I am going to want to add to this...but came out real nice.
my material was a formica door found in the counters section at Home Depot.
About an inch thick and formica all around.
Fits nice and snug on the inside perimeter of my bait tank.
Did the cut test on the bottom side, and holds up real nice to sharp blades.
Thanks for the ideas guys