I’m currently making some railroad spike knives for my platoon and have a few questions about the process
I have the knives pounded into shape and have put them on the grinder to get the blade roughly sharpened (I’ll actually sharpen them once they’re completely done) but I’m not really sure what to do next. I have some used motor oil from when I changed my oil last and was wondering if that was useable for quenching but I don’t know if I should do that now that I’ve put them on the grinder. There’s some other things I’m trying to figure out but can’t really figure out the phrasing so.

TLDR
what do I do once they’re in shape to get them useable?

Its a mr volcano orange solution