1095 slip joint spring temper?

[joe9knives]

I'm a newby trying to make slip joint folders. I was told by another knifemaker that I could use 1095 for the spring but he didn't know the tempering temps. I have a small kiln but i am not oppossed to using a torch with mapp gas. Any help is greatly appreciated.

 

[Bruce Bump]

I make most of my springs from 1095. I heat them in my oven to 1475 and very quickly quench in toughquench oil. (You only have about 1 second before the part starts to cool.) I temper at 666 for about 15 minutes. It helps to sand and polish the part before tempering so a nice steel blue color can be seen. Be sure the part is free of burrs and stress risers before the final test or it will break. Let me know if it works. Its always nice to make two and use one to play with. It helps build confidence.

 

[joe9knives]

Thanks Bruce for the info. We'll see how it goes. can't wait.

 

[Chuck Gedraitis Knives]

I temper 3 times and have never had a spring break.

 

[joe9knives]

I tried Bruce's method and I have been testing the finshed knife now and it seems to work great! thanks again.

 

[Larrin]

I make most of my springs from 1095. I heat them in my oven to 1475 and very quickly quench in toughquench oil. (You only have about 1 second before the part starts to cool.) I temper at 666 for about 15 minutes. It helps to sand and polish the part before tempering so a nice steel blue color can be seen. Be sure the part is free of burrs and stress risers before the final test or it will break. Let me know if it works. Its always nice to make two and use one to play with. It helps build confidence.

I think I'd temper at 667 instead.

 

[joe9knives]

very funny Larrin. I thought the same thing.

 

[Bruce Bump]

Listen you smart a$$s. It may even work at 665!