#### CDHumiston

##### KNIFE MAKER

1st 3 were D2. Preheat 1200° hold 15 minutes. Ramp to 1850° soak for 30 minutes. After one 2-hour temper at 350° blades are 61, 61 and 62.

2nd 3 were 440C. Preheat 1425° hold 15 minutes. Ramp to 1875° soak for 30 minutes. After one 2-hour temper at 300° blades are 61, 60 and 61.5.

3rd 2 were AEB-L. Preheat 1500° hold 15 minutes. Ramp to 1950° soak for 15 minutes. After one 2-hour temper at 350° blades are 60 and 62.

All blades were plate quenched in aluminum in their foil pouches then removed and put in the freezer for an hour. It's all I had.

The Question - I am now curious if I need the second 2-hour cycle in the temper oven.