This can is just as the name implies. It could be used to keep your hot/hot or cold/cold. Aluminum inside, insulated foam on the outside. It's rather simple to make. It could be used outside or around the house to keep your coffee warm or a beverage cold. You could think of it like your very own coffee coozie :)
Step 1: Things you'll use
If you'll look at the other pictures below, you see that a 12oz. can , 8oz. foam cup and what I used is a military issued p-38 (can opener). You will need a razor blade and book as well. As you can see most of the items you'll find readily at your home.
Step 2: Remove top and sandpaper
First start by removing the top of the can. Like I stated before, I used a p-38 can opener. You may use any tool that might aid you in this process. Once you have the top removed, use sand paper to remove any burs or rough edges that were left behind from cutting the top. Wash your can thouroughly
Step 3: Cutting foam cup
Now, cutting the foam by placing a razor blade into a book at a height resembling that in the picture. You don't have to be exact in this process (but remember what page you placed your razor in for future reference). Cut just above the lip of the cup as shown, baring down on the book as you turn the cup with the other hand and the razor will do the rest. After you have the first section cut, using the same cup cut another piece of cup foam cup just a bit smaller than the lip piece on the other cup. This piece will serve as a shim under the lip as you start the cup.
Step 4: Sliding foam onto can
Now slide the second piece of foam (Shim) that you cut, carefully onto the can to the bottom. Now place your first piece of the lip cut down over the can, flush with the bottom foam piece, already on the can.