/diy/ - Do It Yourself

I am looking for a method to make a Solar Dish Cooker at camp this summer at camp. I found this "idea" on the internet and am now thinking how to build something like this using a flat base of approx 1 by 1 Meter, a few tiles of mirrors, a base to raise the thing I want to heat up.

Problem is that I have not really a solid idea how I can allign all the mirrors. Is there a way to make them detatchable and re-aimable ?

What should I use to raise the thing I want to heat up ? Wood would be the worst possible choice since it would most likely catch fire very soon.

Are there better alternatives than tiles of mirrors ?

I am only going to use this at camp and otherwize for fun, would it be worth it to create a way to rotate the whole contraption ? or would I be better off just shoving something underneath the device every half hour or so ( I do not think a solar machine will disallign itself within less )

Got any idea's ? throw them at me :)