Carpenter Chisel Sharpening Technique?

I have a rather abused Carpenter Chisel that I inherited. It has plenty of 'blade' left on it, just alot of dings. I've attempted to sharpen it with a metal file I have in the shop, and have had mixed results. I was hoping someone could share their technique.

StickStoneBone (author) 7 years ago
ah... silly me, I found the answer on instructables: Tool Tip: How to Sharpen a Chisel Sweet.
Ha Ha, best answer :D
That didn't really talk about a VERY badly damaged chisel, and the need to actually grind the bevels back on. A metal file is unlikely to make much headway, because a half-decent chisel is made of hardened carbon-steel.
StickStoneBone (author)  steveastrouk7 years ago
True, however I'm assuming the techniques used in the article will resolve my issue. Haven't tried it yet, don't have the sharpening stones yet.