I felt something early this evening and it was not good.
I got a big tactical of D2 in to HT. This blade is of 1/4 inch stock with no taper from the ricasso back to end of tang. All went well right to the air quench. I knew it would take a while to get it quenched enough for temper. The blade portion quenched just as expected but that heavy tang ......., and the blade close to ricasso remained way too warm to put in temper. It suddenly dawned on me; this thing is going to ping. I never felt that way since I was in northern Ontario in 94 when I was by myself on a fly-in lake shore about 200 yards from my tent camp way after dark and suddenly just knew a black bear was sizing me up. Its a helpless and unique feeling when you instantly realize you just stepped in it and you did it all by yourself. Well, just like in 94, I got lucky with this D2. I was able to get it into temper without the blade cooling too far before that and without the differential heat being too much. I thinkst I have learned a generous lesson about air quenching heavy steel with complex geometry.
RL
I got a big tactical of D2 in to HT. This blade is of 1/4 inch stock with no taper from the ricasso back to end of tang. All went well right to the air quench. I knew it would take a while to get it quenched enough for temper. The blade portion quenched just as expected but that heavy tang ......., and the blade close to ricasso remained way too warm to put in temper. It suddenly dawned on me; this thing is going to ping. I never felt that way since I was in northern Ontario in 94 when I was by myself on a fly-in lake shore about 200 yards from my tent camp way after dark and suddenly just knew a black bear was sizing me up. Its a helpless and unique feeling when you instantly realize you just stepped in it and you did it all by yourself. Well, just like in 94, I got lucky with this D2. I was able to get it into temper without the blade cooling too far before that and without the differential heat being too much. I thinkst I have learned a generous lesson about air quenching heavy steel with complex geometry.
RL