The one I made is a bit taller than that shown in the video.

The aluminum from a roasting pan is very easy to work with and very light. I prefer it by far to steel.

You can form it into a cone shape if that would work better for you, and you don't need to fold it double or triple. I took another look at mine and all you need to do to give it some strength is to fold it over about 1/2" along the top and bottom sides (i.e., double the wall thickness along the edges).

Being an old metal man I should probably make a video myself. That kid did a great job, but I probably know a few tricks that could make it easier. I need to get some batteries for my camera