daizee
Knifemaker / Craftsman / Service Provider
- Joined
- Dec 30, 2009
- Messages
- 11,176
Hi All, figured I'd better cast around for advice before simply trying the same thing over again.
Last night we cooked a batch of ats34/154CM blades in foil, plate-quenched.
Mr. M's 1/8" ats34 seemed to come out fine.
In the past I've done ~0.140" 154CM, plate-quenched in-packet (and out too?) with no issues.
Last night my pair of 3/32" paring knives came out very warped at the tip in the same direction. After straightening them at tempering temperature and cooling, I discovered they don't have much spring to them. They really seem soft - I can bend them with my fingers...
What gives? The steel is marked 154CM and the color markings on the end match Aldo's chart, so that's unlikely the problem.
Were the blades too thin to plate quench due to the folds of the foil packets??
Another odd side-effect is that the heat-treat colors were more... colorful than in the past. Normally the blades come out grayish with just suggestions of color. These were somewhere in between that and A2.
Any ideas before I hit up Mr. M. to re-cook these things into oblivion?
ETA: the two 3/32" blades were quenched by themselves, separately from the 1/8" blade.
-Daizee
I doubt a picture will help, but here's one as a show of good faith.
The two paring knives are the softies.
The stick tang with the cleaned-up back surface is Mr. M's ats34. The back was ground/finished on one of Nathan's 48" radius platens.
Last night we cooked a batch of ats34/154CM blades in foil, plate-quenched.
Mr. M's 1/8" ats34 seemed to come out fine.
In the past I've done ~0.140" 154CM, plate-quenched in-packet (and out too?) with no issues.
Last night my pair of 3/32" paring knives came out very warped at the tip in the same direction. After straightening them at tempering temperature and cooling, I discovered they don't have much spring to them. They really seem soft - I can bend them with my fingers...
What gives? The steel is marked 154CM and the color markings on the end match Aldo's chart, so that's unlikely the problem.
Were the blades too thin to plate quench due to the folds of the foil packets??
Another odd side-effect is that the heat-treat colors were more... colorful than in the past. Normally the blades come out grayish with just suggestions of color. These were somewhere in between that and A2.
Any ideas before I hit up Mr. M. to re-cook these things into oblivion?
ETA: the two 3/32" blades were quenched by themselves, separately from the 1/8" blade.
-Daizee
I doubt a picture will help, but here's one as a show of good faith.
The two paring knives are the softies.
The stick tang with the cleaned-up back surface is Mr. M's ats34. The back was ground/finished on one of Nathan's 48" radius platens.
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