Thierry Duguet
Elite Cafe Member
- Joined
- Jun 4, 2007
- Messages
- 359
If you tool dulls the metal is not harden properly (I know it is an obvious statement). So start the hardening process, water will give a more brutal hardening than oil, every time you heat metal with a torch you lose carbon so you can repeat the operation only so many time. When draw back you need to apply an even heat on the tool, if it because dark yellow chances are that you went to hot. Has for harder is better, it is not quiet the case, metal need to flex and use its elastic property, like a knife, if it does not flex it break. You have to make it hard enough to flex (like a spring) but not so soft that it will deform. Buy something pre-heat treated and be gentle if you have to grind it (keep it cool)