For this type of steel which is generally 1095.(or most other carbon steels) heating to non magnetic and soaking at that temp for a few minutes, is sufficient to do the job and an extendable pen magnet is ideal to test the blade while it is still in the fire. A quick touch to feel for this is all that is needed.
![](http://i1070.photobucket.com/albums/u488/vongruff1/knives/DSCN0240_zpswrk3h7kn.jpg)
![](http://i1070.photobucket.com/albums/u488/vongruff1/knives/DSCN0241_zpslboljz4t.jpg)
When the blade has reached the necessary heat I will hold it there for another 5 minutes and then quench in canola oil heated to 130degrees. To hold the oil an old fire extinguisher body was ideal. About 11 inches deep by 3 in dia it is enough for all but the longer blades that are getting into the specialist territory.
![](http://i1070.photobucket.com/albums/u488/vongruff1/knives/DSCN0240_zpswrk3h7kn.jpg)
![](http://i1070.photobucket.com/albums/u488/vongruff1/knives/DSCN0241_zpslboljz4t.jpg)
When the blade has reached the necessary heat I will hold it there for another 5 minutes and then quench in canola oil heated to 130degrees. To hold the oil an old fire extinguisher body was ideal. About 11 inches deep by 3 in dia it is enough for all but the longer blades that are getting into the specialist territory.
![](http://i1070.photobucket.com/albums/u488/vongruff1/knives/DSCN0236_zpslhakj4i3.jpg)
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