Thread: O1 heat treating problem

It seems You are right. I should have let a bit more thickness on the blade. I sanded from the edge a few and it is almost good.

It seems very stark I would like to re-tempering the blade. In this case, once an hour is quite enough? What temperature works for you for tempering?

Originally Posted by mikew

Is the edge chipping during honing or are you testing the edge in some way after honing?

During the honing process I see if there are any problem: the feeling, lights on the edge, hand shaving..etc.

For razors O1 I temper two hours at 400 F.

Charlie

Thanks, Charlie! This is similar to mine. And if you do a re-tempering, you also need twice an hour or once an hour is quite enough?

I am not sure I understand, after quenching/hardening is finished I will temper at 400 degrees for two hours.

Sorry for my poor english. I meaned if you feel the end result is too hard maybe you should re-tempering the blade. You have been doing this routine, but when you test it.

I admire your language skills, I am an one language speaker.

If I feel it is too hard I will bump the temp up by 25 degrees and re-temper for two more hours. and so on an so on, until I get the blade how I want it.

Setting the first bevel is always hardest, I use diamond stone a lot to get bevel right & then move on to water stones. Use tape on the spine.

You are the only one honing the steel. If you have tempered at 400F for 2 hours, it should be fine.

Originally Posted by spazola

I admire your language skills, I am an one language speaker.

Recently talked to my wife about it (She speaks better English than me) how good you that the whole World can understand you in the native language.

Originally Posted by spazola

If I feel it is too hard I will bump the temp up by 25 degrees and re-temper for two more hours. and so on an so on, until I get the blade how I want it.

Thanks, I see. The 25 degress is Fahrenheit, isn't it?

Thanks, Scott!