Best tool for sharpening serrations on a hard steel?

[BIG45-70]

I recently ordered a Endura in ZDP-189 with a partially serrated blade. I went partially serrated because I wanted to try something new however all but one of my knives are plain edge and the only tool I have is the cone shaped diamond file on of the those smiths pocket sharpeners.

I keep all my blades obsessively sharp and was wondering what the best too to keep my new serrated ZDP-189 razor sharp?

 

[Talley1013]

The best thing I know to use is the sharpmaker. I used to stay away from Serrated edges until I got the SM. I have no issue keeping my Spyderco serrations screaming sharp. The SM is a good all around tool for touch ups but it really shines when sharpening serrations. I've never used it on ZDP serrations but the stones work fine on PE ZDP so you should be OK. Remember, the key with the SM is to not let the edge get too dull. If you really bang up the edge you might want to look into getting the diamond stones as the medium stones dont cut super fast.