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+1. I've used the coarse stone on a tri-hone several times on damaged blades. I rink it it around 300 grit, so be careful with it, it will eat the metal quickly.

+1 to the above advice. Another tip is to use 3 or 4 layers of tape. Once the edge starts to come in you can start removing the tape, layer by layer until you are down to one or no tape, depending on...