Re: Anybody make their own blades?
My first blade was made about 25 years ago. Till now I made about 150 knives, mostly for me and for friends.
D2 is a high alloy tool steel with a very narrow temperature window and heating/cooling regimen. If you want a good, fine grained and reliable blade, send it to a good heat treating company, I prefer cryo treatment with D2.
Please do NOT attempt to harden D2 yourself.
A2 is an airhardening medium alloy tool steel. With the right equipment, it can be hardened by yourself.
Reaching the right temperature and holding it for the right amount of time without twisting or bending the blade is paramount.
You can download the datasheets of both steels from the manufacturers, the heat treatment regimen is documented there.
Low alloy steels like 1095, with a little experience, can be hardened and tempered with backyard equipment.
The bladeforums.com is full of info about knive making. Have fun for the next 10 to 15 days of reading into this topic
I send my blades after grinding out from the blanks to a company here in Bavaria. Heat treating with deep cryo and tempering to +- 0,5 HRC costs 8 €uro per blade. For this € I get the best performance possible of my preferred steel.
At testing I put a set into a stainless blade (SB1 steel) at proven 61HRC. Try this with ATS34 or 440C, you get a face full of shards.
Sorry for the rant, but I think you get my point.
After putting a lot of sweat and elbow grease into a knive, please spend the $ for decent heat treatment.