Hi guys over the last week or so I have started the tedious (but enjoyable) task of hand making my 1st knife, all with hand tools, hacksaw, files a vice etc etc.
The metal I am using is N690 and I sent the blade in for Heat treatment to Böhler, they do a vacuum heat treatment process, and its HRC Rockwell hardness is apparently 58-60
Now the question I have is, this blade came back CLEAN very clean , no scale at all... from what I can understand, and I did ask and check the net.. is that vacuum heat treatment evacuates the air and gases out so that nothing can oxidize the metal. So yeah I am nervous as it is so darn clean hahaha.
Is this true? I just want to be triple sure, as all the info I had previously understood with normal Heat Treat, would leave scale on the blade.
Here is a pic of what I have (as it came back from vacuum heat treat)...
I have a lot of finishing still to do...d0d006c7-5fb6-41b2-a0f8-1c55ffa7d548.jpg