Nicely done, but after softening the spring as shown by heating it until it is red hot, you could temper the spring again by reheating it to a lesser temperature, only to about 300 degrees C, at which temperature it looks slightly bluish, and then immediately dunking it (on the bolt) into a small jar partly filled with linseed oil. I tried this a couple of days ago on a small spring from a set of kitchen scales and it worked well.
Nicely done, but after softening the spring as shown by heating it until it is red hot, you could temper the spring again by reheating it to a lesser temperature, only to about 300 degrees C, at which temperature it looks slightly bluish, and then immediately dunking it (on the bolt) into a small jar partly filled with linseed oil. I tried this a couple of days ago on a small spring from a set of kitchen scales and it worked well.
panjie444 1 month ago