[Worth1]

Originally Posted by Itoero

That's ok, I like rude people

I was wrong, it's 2 mm thick, I just checked.
It's metal, coated with green plastic.

edit: It takes a lot of effort to make one, so I wnat to do it correct.

2.5 mm should be fine.
You might consider making them 45 centimeters or 18 inches in diameter.

Worth