I have an edgemaster switch with a broken leaf spring. Someone said most people make their own leaf springs. I need to know- what kind of material is used in a leaf springand where can i buy it?
How do you form the material?
How do you heat treat the material after forming?
Can anyone help? Please!

You could buy some simple 1095 carbon steel form one of the knifemaking supply houses, or McMaster Carr. I'd suggest taking a look over at SharperDeal.biz - it's a forum dedicated to switchblades. there are a lot of threads on repair and restoration of autos, as well as spring replacement.
J

JD WARE KNIVES (http://jdwareknives.com)