Pizza box hinges?
 

How do you make the hinges on the coragated plastic that the pizza box is made out of?

Pizza box hinges?
 

Here's a tool you can make yourself for cutting the hinges.........

http://www.spadtothebone.com/tipstricks/tip_index.htm

also, while youre there......check out the whole site.........interesting reading........

Pizza box hinges?
 

Also check out Dave McDonald's Pizza Box Flyer page.......

http://mypage.yhti.net/~dmcdnld/pizzabox.htm