Help with a broken sear spring.

[Dale Allen Raby]

I wound up making my own spring and it turned out good! My advice is get goog steel to start something high carbon to start. After some tried and failed attempts on some old hacksaw blades I went in the parts bin and found an old mauser leaf spring and this is what I used for the final spring. First soften or aneal the metal the shape it to your spring shape. Then reharden the spring. Finally you need to draw some of the hardness off of that newly hardened spring or it will snap. Heat hardened part to a royal blue color 560-600 degree and then let air cool. Worked well for me! I will post photos the repair I made shortly.

Tempering the spring evenly is the hardest part. The most critical section is that bend because if it isn't tempered properly, it will break. Now if you leave the two "legs" hard, they can break too, but they are not under as much stress as the bend. That kind of spring though, is the simplest to make. Coil springs are quite another matter! You almost have to do those in an oven with a pyrometer in it.