Support BladeForums! Paid memberships don't see ads! I am planning to make a camping knife from nitro-V. I would like to try to cryo with dry ice and denatured alcohol but never tried it before... Here is the HT protocol I was thinking about Heat to 1950 for 20 minutes in SS foil Plate quench (not sure how long I need) Dunk in dry ice / denatured alcohol (not sure how long) Temper at 400 for 2 hours twice What do you guys think ? Any suggestions ? Some people temper after plate quench and before cryo... What is best ?