For all of you who would like to venture into this, and do not have oven here is a really short course of what needs to be done.
1. Anneal old spring by heating to 1500F,
2. Cool slowly in wood ash,
3. Reheat to red - reshape,
4. Reheat to critical, (that is 1500F again. This Is non magnetic state),
5. Quench in warm oil (150F mixture of 5W30 and transmission oil), now is hardened.
6. Tempering by lead bath immersion,
7. Let it cool aside.
Thanks
SIGP2101
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