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If you're going to regrind the tip, make sure you have a water container next to the grinder.
Grind then dip - Grind then dip - Grind then dip. No more than a second or 2 at the spine and just a...

Sorry 'bout the break mate but it's happened to most of us. Don't scrap it, it may be useful.
I broke this one but I reground it into something that makes ATG passes I can't do with a normal size...