First Heat trating D2 & Elmax steel 

I don't have try to sharpen any blade with sandpaper but I think all type of steel is possible to sharpen with sandpaper with patience. Thank you.

Air quenching with plates these steels don’t get the oil quenching

Hi Michele. For the open field like bushcraft etc. i think the better steel is 01 or 1095 (non stainless) Between D2 & M390 I think better is M390 because D2 is dangerous to cracking edge during the chopping and batoning work. For stainless steel I prefer 440C. Is for general cut work with easy re-sharpening.

I'm looking for steel on bauschkraft. I had chosen D2. Now I read your post, it is not suitable for chopping and batonig. The second option I have either 440C (N695 or N690) or ELMAX - I require good flexibility, and long-lasting sharpness. Which steel you will be more appropriate ? Thank you very much

What do you think of the 'M4 Lionsteel in M390?

D2 is perfectly fine for chopping and batoning ...

@Therka Marka Not always a trade off. I have ballbearing steel custom knife, that sharpens easily almost like 1095 and holds it's edge longer than Lionsteels M390...

Thank you for your advise. For this time I do not measure the hardmess before tempering.

You can't quench stainless steel in gas oven. They need soaking time(depends on thickness) at steady temperature. U can use oven for tempering tho.

Once we have to hardening stainless steel must be put the blade inside the foil envelope because we must keep out the oxygen from blade surface. So i put one small piece of paper because when paper is burning the flame ''eats'' the oxygen who there is inside the envelope. (bad English...i'm sorry)

Alkiviadis Knives Thank you for the reply. And your English is perfectly understandable :-) I like the logic of the paper in the foil

Τις αντιστάσεις τις έφτιαξα μόνος μου αγοράζοντας ειδικό σύρμα από το κατάστημα ''Κλαπάκης'' στην οδό Αχαρνών 230. Κάνω βαφές μόνο στις δικές μου λάμες.