Tortilla

How do you build a tortilla press for over 12" & over tortillas?

I have had bad luck in finding a toritilla press over or at 12". I have a bit of wood working knowledge and have seen plenty of "home-made" tortilla presses. So where do I find info or how do I make one for myself? Thanks!
Addition: Are there coatings that can be put on the wood to protect it, yet that is safe to eat on after a few washes?

Public Comments

1. A tortilla press that works well can be easily made from a few scraps of lumber. And the rougher your woodworking, the more authentic it looks.
   
   
   
   USe any 3/4 by 1-inch-thick wood on hand, choosing unwarped boards that will fit together evenly. Cut the paddle-shaped bottom from an 8 1/2 by 12 1/2-inch piece, leaving a handle on one end where you attach the 2 by 2-inch pressure arm. Glue and nail four 1 by 2 crosspieces to the top and bottom boards to prevent warping should the press need to be washed. Attach hinges securely with long screws.
   
   
   
   Last, locate the arm's 1/4-inch bolt at a height where the arm can lever down (not completely horizontally) over the top of the press.