Posted By: Jim Scott
1 people found this review helpfulMy blade is made of M390 which I have heard would be a hard steel to sharpen. I just put a couple sprays on the smooth side of my strop and it took my edge to the next level. I expect the spray to last me years of sharpening before I need more. It really help cut the steel well, and only needed about 20 strokes on each side. Shake it well before you use the spray.
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