From: muratlanne@gmail.com   
      
   "Snag"  wrote in message news:10k0u3a$57aj$1@dont-email.me...   
      
      I have a blade made from half of an old Chevy leaf spring that   
   already had an eye in one end . Mid 70's Camaro IIRC . I've got hickory   
   stock to make a handle but haven't felt any urge to complete it . I left   
   my spring in the wood stove for like 3-4 days to anneal and did part of   
   the shaping on the mill and part with the angle grinder . It's still   
   pretty hard ...   
   Snag   
      
   ---------------------------------   
   Leaf springs may be made from 5160 steel.   
   https://knifesteelnerds.com/2019/04/01/how-to-heat-treat-5160/   
      
   If the part fits a toaster oven could temper it. That's what the blacksmith   
   suggested for my forged and hardened leaf spring blade. Since I had it, I   
   fitted an incomplete laboratory tube furnace with 2" exhaust pipe for the   
   tube, and a digital temperature controller, which could give closer   
   temperature regulation to a toaster oven set at max.   
      
   I bought the tube furnace at auction hoping to use it to heat treat   
   shop-made cutting tools in an inert atmosphere or vacuum. So far coating the   
   O-1 tool with soap and heating it in a charcoal-filled tube has sufficed for   
   fairly crude home projects.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)