QUOTE (lpellegr @ Feb 24 2008, 12:25 PM)

.... You could probably even use tuna cans with both ends cut out and washed but they will be a little smaller....
Not if you use the "big" tuna cans. They're 3¾ inches wide by 2 inches deep. I didn't cut the bottom out and mine work fine (the bottom is rounded, making it difficult to use a can opener anyway). Yes, I had to eat a lot of tuna fish salad to get mine.
QUOTE (lpellegr @ Feb 24 2008, 12:25 PM)

....You can use 4" round cookie cutters as molds, or fold foil into 1" strips and make circles out of them. If you have a hamburger bun pan you can use that....
I made a huge search for the perfect hamburger bun pans. Best I could determine, "real" hamburger bun pans are heavy duty restaurant supply items. Big and expensive.
My favorite so far are the aluminum foil 5 inch disposable pie tins. They have in inside diameter at the top of 4¼ inches. Being a pie shape, the bottom diameter is smaller, but have kind of an accordian construction. So the trick is to "stretch" the bottom out with your fingers and it will be almost as big as the top. Wish I could take credit for such a brilliant idea, but someone on the forum posted this tip (sorry, I can't remember who). I don't throw them away, I reuse them. I found mine at Albertsons, they have a large selection of disposable aluminum bakeware. Our Walmart has a lousy selection, I guess there's not enough demand to meet their profit requirements. I love Walmart, but one of these days we'll miss full service grocery stores.
best regards, lm