View Full Version : Odd Question

04-09-2003, 08:23 PM
im making a folder for my father... i want on of the "blades" to be more of a flat "pry bar" for little work what hadness should my o1 be at and any suggestion on the best way to get it there. im using a propane forge. thx



Jerry Hossom
04-11-2003, 03:29 PM
Interesting question. I suspect your bigger problem will be the integrity of the folder pivot than that of the pryblade itself. I asssume since you are speaking of multiple blades, you are building a slip joint design, which are not noted for lateral strength.

That said, why not make the pryblade in a steel that might be better for toughness than O1? 5160, hardened to about Rc50 would make a much better pry bar. I would think it isn't really necessary for the pryblade and cutting blade to be the same steel.

Jason Cutter
04-23-2003, 07:19 PM
I've made a bottle opener for a friend made of O-1 tempered to about 52-54HRC (according to the charts) which seems unbreakable so far. I used 525F for 2 hours, which is as high as my oven goes. But yup, 5160 or L-6 at a spring temper sounds ideal. Jason.