Jack Rowe's Midway video on spring making could be used as a guide. I learned how to make springs by viewing it. If you want to try it yourself. But, you may want someone else to do it. I use a high output burner, which normally heats my boiling/steaming tanks. It's much more difficult using a propane or welding torch, but it would depend on the size. The bigger the better, so you can heat evenly.
I speculate that the spring would first have to be brought to red heat, spreaded slightly, then quenched. Important that it is "cherry red", not higher so as not to burn carbon out. Then, the spring would need to be tempered. I coat springs with ATF, heat until the oil "flashes off", then quench. Many others temper differently using things like a lead bath. The temp of a lead bath is controlled better, and is a more precise method of tempering. Springs are tricky and require practice, so you might consider having it done by a professional. You probably don't want to chance breaking it, due to improper tempering.
For me, if I break one, out come the files and the spring steel and I make another one, which is fairly time consuming. Luckily, I'm to the point I seldom have them break.
Regards
Ken
Last edited by Ken61; 02/17/17 11:31 AM.
