I wanted to make my own cheap frozen waffles at home, but I couldn't find a tray for that.
So I had to make my own.
I started by taking a plaster negative of my waffle maker.
Then I used a silicone caulk to make the copy of the waffle maker.
This first "prototype" was tried and has delivered good results so far (the best one is that for some unknown reason the frozen dough won't stick to the waffle maker!).
I am now preparing some more negatives to build a bigger food grade silicone mold tray.