I used THIS .083" walled DOM from Summit Racing.
HERE is my build thread if you’re interested.
HERE are the largest pieces to come off the machine so far.
The spoil board is 24"x24"
Edit: sorry, spoil board in the Primo pictures is 21"x21", my old Burley board was 24"x24". I just haven’t gotten around to making a new one for this rig.