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Exactly. :)

Yes, it seems. I am happy with it. I will change my thermocouple and make a complete HT. I hope... :)

Sorry guys, I was stupid. I strongly trusted in screen of the oven. This is a small oven with specialities like powerlessness. I have done some test, you can see below the result.

193820

A...

No, not just mine HT. I bought my oven because I want to keep everything in my hand. But it is also possible that I am overthinking this problem.

Yes, I understand this but I think there are good/average edge and the perfect edge. I want to get the maximum from O1.
I am not satisfied with the current results. Not just with my own heat...

Many thanks. Actually I understand why you worte the starting temperature should be 190C.

Thanks, Mike!

I missed your answer and I am tempering now. :)
I reduced my soaking time to around 9 minutes and with opening my oven' door I was able to reach at 798-805C. My tempering time 2x2h,...

I also get the feeling. ;)

I made a couple of mini-razor for this purpose. These are not wellworked. I want to be good at the heat tempering.

193319

"How confident are you that your thermocouple is accurate?" - I dont...

I finished the fourth attempt as well.

Fourth attempt
edge 1 mm
normalizing: none
thermal cycling: 1472F (800C), three times, in 130F (55C) warm oil 2-3 sec.
soaking: 1472F (800C), 15 min....

Mike, I just read it more carefully. Maybe I used the wrong term: normalizing.
This is my process from SRP's pdf:

"To normalize, I heat the steel to 1450 F, hold it there for a couple of...

It is logical, thank you. If all goes well, tomorrow or the day after tomorrow I will publish the fourth attempt...

One more question. And what about the Preheating Temperature: 1110-1290 ° F (600-700 ° C)? I ignored it so far.

Thanks, I see. And keep it just for a few seconds in the warm oil?

Today I have made a new small razor for the next attempt. :) How warm the oil would be?
This will be the next attempt. Thanks!


Your welcome.

Thank you so much! :)

Maybe not, but I thought it could not hurt.

Many thanks for your useful advices. I will utilize them tomorrow. :)

I plan to use cryo treatment, but first I would like to make a really nice edge on traditional way. I am a perfectionist, I'm...

:)

Around 61 HRC. But more important for me the fine and durable edge.

Thank you for your help!

The 1,2,4 are the same bar and a third one is just from the same retailer.

During my normalization process I take out and then allowing it to cool slowly in still air as long as it will not be all...

I made some pictures today. I hope to see the details.

First attempt
edge 0.5 mm
normalizing: 805C, 3 times
soaking: 805C, 15 min.
quenching oil: 80C, 5-10 sec
tempering: after cooling to...

I learned more in two days than I ever thought I would. Thank you very much for all!

I broked some and I will take some pictures and post them.

One more question: How many times can I re-HT a steel without significant loss?

And thank you very much for all these useful comments!...

Thanks for the comment!


Yes, I have. I have broked one but more will follow. I grinded couple of razors just for tests.

Then it should be no problem.

I dont use DMT. I hone wiht japanese synthetics and naturals. I use loupe as well. Rather my fault is the "overhoning".

I see, thanks.

Good idea, thanks! The hardness is enough(sometimes to hard :)), the sensitivity is my problem.