quenching 1/16th O1 ?

MarkJeffrey

MarkJeffrey

Joined
Nov 7, 2013
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I want to make a nakiri, and I have some 1/16th x 2" O1 I was thinking of using. I'm just wondering about the process for going at something this thin from the start. Would you guys suggest profiling then doing all the grinding post heat treat? Or rough grind as usual then heat treat? I'm trying to avoid warpage.. generally anything I've made so far the spine has been 1/8th or greater. I'm running an evenheat and quenching in canola. Thanks in advance for any input
 
Somebody who works with O-1 a lot will chime in (I don't), but with 1/16th 1095 and 15n20 I find that doing the grinding afterwards helps, and I also thermal cycle it just like 52100 after it's profiled, drilled, and stamped (1600 cool to black, 1500 same, 1200 , cool to black and quench). Not much chance of warping if you take the time to do that.
I take each blade straight to the anvil after quench for straightening with a brass hammer, too- it's soft for a short time.
 
I use O2 all the time, they are almost the same steel, for 1/16" thickness I do all the grinding post HT, I also quench in oil and before its completelly cold I press the steel between two heavy sheets to straighten it, out of the oven it always came out curved, but with this procedure they end up straight as an arrow.


Pablo
 
I bought a auction lot of O-1 last year, and included in that was some 1/32" in stock. Stupid thin. I figured what the heck, I'd give it a shot. ground out a basic slicer shape and did a simple heat treat on it (propane forge to non-critical & peanut oil quench). came out of heat treat straight as an arrow. Slapped some scales on it and it's now one of my favorite kitchen slicing knives. Just further proof that O-1 is my friend ;)

Can't imagine 1/16" would be any more troublesome.
 
Thanks guys, I just started HT on it today. I did the 3 cycles elementfe mentioned, then my regular quenching method. It came out almost straight, very slight curve, slight enough that I had to stare at it for 5 minutes to decide if it did or not. I just took it out of first temper clamped with a slight shim under its nose
 
[SUP][/SUP]Not to long ago I did a 1/16" paring knife in O1. I just profiled and drilled it prior to HT and it came out of the forge straight as an arrow. Quenched fine but I don't think what Pablo said would be a bad idea just in case. Just remember to dunk often when grinding and use fresh belts.

Jay
 
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