I've been working pretty slowly through this grind.. I've done almost all of it now with my mill file... and no beveling jig (I just saw one that somebody else posted on another site!). But it's the same knife I posted before. I'm pretty sure I'm to the point of quenching (after some sanding and fine tuning) but I was hoping to get input on what I've done so far... and if there is anything else that I should address before I quench.
The hardest thing has been keeping my plunge lines symmetrical with each other and that has caused them to go further down the blade than I wanted. Another thing that's happened is that I've worked that area more than other parts of the blade and you can see where that area is more narrow than above it. You can only notice it when looking at it from the spine towards the edge. I've tried leveling it out... but I don't want to remove any more knife. It's amazing how you can grind a knife away into the void.
And also... I really wanted a flat grind. And I still don't think I got it. I suppose that will just come with practice.
After being inspired by one of Tippit's knives posted recently, I decided to leave the plunge line intact to the back.
So the two big questions I need answered are:
Other than some more sanding, and drilling the tang holes, and maybe some file work on the spine (I want to hide that narrow area above the ricasso!)... what else would you recommend that I do to it to improve this?
Also.. my spine has pretty sharp edges right now. Is it better to treat those now before I heat treat?
And more importantly.... How do I harden? This is 52" saw mill steel that Rooster gave me. He thought it might be L6. But a lot of people say that most saw mill blades these days use 8670M. So... what is the best course of action? Just bring it to non-magnetic and quench it in oil... and then test it's hardness the best I can (I bought some brass rod to try that test after my heat treatment)?
I know some folks on this forum don't like working with these kinds of unknowns... but I'm mostly using this to learn to grind. If I get a quality knife out of it.... I will be tickled.
Anyway folks... There is a lot in this post! I've been working hard on learning here so I would love some honest feedback on my progress so far. You can't hurt my feelings!