Hey everyone, looking for some info on my drill bits.
I made a Sgain Dubh out of some Damascus but I think somewhere along the way it hardened before I was wanting it too as for the life of me I could drill this steel.
I bought cobalt bits and finally carbide tipped bits that with a lot of patience, ground their way through.
Anyway, today I was working on a knife, out of bog standard 01, and none of the expensive bits were biting. Just sort of dishing it out.
In my despair I grabbed a cheap HSS 3mm bit out of my driver case that hasn't been used on metal before and it cut like butter!
So my question, through use is it possible to roll the edge of a bit so it doesn't cut any more, and if so is it worth trying to sharpen them or should I just stump for some new ones?