What grit sandpaper to repair damaged edge?

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nenofury

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Sort of crushed a 1 mm section of the edge on a 154cm blade. Need to remove lots of material to resharpen and am thinking about using sandpaper instead of the sharpmaker. Problem is I've never used it for knives, only planes and chisels. What grit would y'all recommend?
 
Are you sure it's crushed and not merely folded over? I had a paring knife go down hard on a ceramic plate (I know, I know, I know better). The edge felt crushed, but I lightly touched it up with a steel and it straightened right out. I know the edge there is now weakened, but the next time I remove metal I bet I remove a lot less than if I had just re-profiled the entire edge.

Since I got my Edge Pro 2 years ago, I stopped steeling since I get a sharper, stronger edge with the high grit stones. This was the first time I found a use for steel.

I don't use sand paper, but with my water stones I would start with the 180 grit stone for a crushed edge. 120 grit if it were really damaged and in need of severe reprofiling.
 
Yeah, it's crushed. Metal was pushed up and is now sitting on both sides of the edge. Kinda like the mushroom of an expanded bullet.
 
Bummer. I'd start with 180 to see how that handles the job. Then move up or down accordingly. Good luck.

I have a very tiny divot in a D2 Benchmade blade. I lent it to a friend to remove targets from a pulley system at the range. The chip is so small I almost need magnification to see it. I can feel it hang up on occation on materials I cut. I smoothed the edges of the divot and decided to live with it as is. With enough future sharpenings it will be gone, but I preferred to extend the life of the blade by not removing much now with a complete reprofile.

Between moderately cutting a finger or damaging a nice/expensive blade, I don't know which is worse. Both are downers.

Good luck.
 
I have successfully used 220 grit SIC wet/dry paper. The work went VERY quickly.

I have also used a DMT diamond hone, glued to a Sharpmaker rod. It keeps the angle nicely, but doesn't work nearly a fast as the coarse wet/dry paper.
 
nenofury said:
Sort of crushed a 1 mm section of the edge on a 154cm blade. Need to remove lots of material to resharpen and am thinking about using sandpaper instead of the sharpmaker. Problem is I've never used it for knives, only planes and chisels. What grit would y'all recommend?
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As coarse as you can get, 80 is decent.

-Cliff
 
Check with the manufacturer and see if they have some sort of sharpening service like Benchmade or Spyderco. The manufacturer might be able to help you out.
 
Thanks for the advice everyone. I went ahead with 180, 220, 400. Then finished on the sharpmaker. Didn't have to remove as much material as I thought. The edge is a little uneven on one side, but that's fine. It's a user and shaves once again. Think I'll invest in the DMT stones to get better control.
 
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