Tempering metal will make it harder and more resistant to bending. Conversley annealing metal will make it softer and easier to bend and shape
Both techniques, combined with selecting the best metal stock for your picks, can help you to fine tune your tools to something far better than commercially available.
Ideally, we would purchase the best metal stock available, and not need to
temper or anneal it. However, thats not always possible, therefore by using these two techniques we can significantly improve less than ideal metal stock.
I was hoping that Romstar might be able to find the time to whip up one of his tutorials, explaining the basics of practical tempering and annealing for the budding lockpick maker.
Of course if anyone else had done this and can contribute, that would be most helpfull.