Wondering if anyone would be interested in designing an open-source Tortilla-making machine from off-the-shelf and 3D-printed parts, that would fit in the kitchen’s counter of a normal household. Something that shapes the dough and cooks a tortilla inside a 30 second window 
An industrial one, for reference: https://www.youtube.com/watch?v=74JEQzbWKz8
And a crepe maker: https://www.youtube.com/watch?v=dGTk-7r5tOg
And a fully automated pizza maker: https://www.youtube.com/watch?v=j7_lxiU8eLM
Food service from 3d printed stuff is still a largely untapped useage. Parts can be coated to be made food safe, and sure, everyone can make a cookie cutter without much worry, but in this litigious society, do you really want to test those waters?
I think its a GREAT Idea - and i think it could be designed to be Food safe! Have it draw the disc of dough - and have in cook on that one side, then it should be on a conveyor that cooks it and after a short time, rolls it over to cook other side, then rolls out when done. Why can’t it be made Food safe! Would make for a GREAT KickStarter project i think. And, I know a guy who loves to tackle new 3D Printer Designs - and he may be interested in doing something like this!!! 
Mixing dough, ensuring a specific humidity, and cutting a 15cm x 3mm disc is probably an elementary task for those who are familiar with machine-making; I’m guessing the trickiest part is isolating the heat, which should reach around 200C (400F), from the rest of the machine and from the user
There was (is?) a restaurant chain called South of the Border that had TexMex food. Both restaurants I’v been in had an automated tortilla maker. Rolled balls of dough were squashed flat, cooked on one side, flipped, then cooked on the other. They were fantastic.