Charlotte Posted June 4, 2009 Share Posted June 4, 2009 (edited) F-N a few thousandths of hardening for "cherry red " is often enough to last for a long time on a polished shaft that is well lubricated. I suggest you try an experiment. make two identical leaf veining dies, harden one, and forge equal numbers of leaves into them. After one hundred leaves; which one is producing the best leaf? Point being: A few is a relative term and case hardening is a technique for tools that get serious use. I have cased fullers because I like leaving a good finish and fit. Many people case harden A36 tools they make for Smithin Magician type dies. 4140, or 5160 is the choice alloy. Finding it and buying in 3/4"x2" gets to be a little expensive for most folks. 4140 blank dies from Blacksmiths Journal are 12 bucks and mild steel are 5 bucks. Finished dies run around 60 bucks. Personally if I take the time to make a die then I'm going to spend a few minutes make sure that it lasts as long as possible. Edited June 4, 2009 by Charlotte spelling Quote Link to comment Share on other sites More sharing options...
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