Completed mini cleaver.

Mark Barone

Well-Known Member
I have had a go at copying this ace example but am unsure about how to heat treat it, help please/

Can I just propane torch harden and temper the cutting part of the 1080+ blade?
Hopefully a more experience person can answer this question. I am fortunate enough to use my wife's stained glass kiln. I bring it up to about 1600 degrees red hot and then quench it in canola oil.
 

Mark Barone

Well-Known Member
I have had a go at copying this ace example but am unsure about how to heat treat it, help please/

Can I just propane torch harden and temper the cutting part of the 1080+ blade?

I hope somebody with more experience answers your question. I don't know. I use my wife's stained glass kiln. The hardest part I had was floating the scale on the handle instead of letting it go all the way to the end.
 

Chris Railey

KNIFE MAKER
Thanks . I was having trouble getting a consistent plunge line on my blades. I actually put a tiny choil on the blade before I started the bevel. It gave me a reference as I replunged. It might be a bad habit but it worked for me. Then I made the choil bigger at the end.
Very nicely done sir. If the choil thingy is a bad habit then I am guilty too I do that on most knives I make.
 

Chris Railey

KNIFE MAKER
I have had a go at copying this ace example but am unsure about how to heat treat it, help please/

Can I just propane torch harden and temper the cutting part of the 1080+ blade?
In my opinion the answer is maybe. I am not too optimistic that a simple propane torch would get the blade to non-magnetic for a quench but you could try. With it being such a small blade, maybe. You could do an internet search on making a one brick forge with a torch that may give you a better chance. As far as temper goes I would just use my house oven after cleaning the knife very well. Just follow the manufacturers advice on temps. I have tempered with a torch for simple tools and springs but the oven is a much better choice for a knife IMO.
 

Robert66

Well-Known Member
I do have a small kiln which I use to effect.

The knife I am on now is 1080+ steel.

For tempering I put it into a already reached temperature kitchen oven at 400 degrees, at 45 minutes the spine had turned straw colour but the cutting edge of the blade had gone dark blue. purplish 1/8 inch all the way along so I took it out

This knife is small
 

Robert66

Well-Known Member
I have just tempered a 1080+ blade 7.5 inches long x 30 mm x 3 mm., the cutting edge is 3,5 inches long.
At only 1 hour in a checked temperature of a 400 degree oven the cutting edge has gone dark blue and the spine is straw, the forum recommendation is 2 x 1 hour cyles cooling to the touch between cycles, is this all correct.

The blade is spotlessly clean

This problem is driving me mad

If I had any hair I would tear it out. lol

Desperate help PLEASE
 

opaul

Well-Known Member
I don’t think you have any issues. But others may chime in with a different opinion.
Continue with the advise and you should be fine and have a great blade.
 

Robert66

Well-Known Member
Thank you opaul.

I forgot to say the blade looks burned when final polished from tempering.

Are you saying I should leave knife tempering for the full 2 x 1 hour cycles irrespective of colour??

After quenching in canola blade is very hard to file test/

I am so confused on this tempering.
 
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