Got this,very easy to do.What I really like is the SHARP edge it puts on stainless steel blades.

It puts an amazing edge on the cheapy 2-3 dollar pocket knives so you can have a sharp blade in each vehicle,purse,bags,etc and it wont cost a fortune.Also does machetes,shovels, and keeps your good knives in fine shape too......I love the thing.

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Smith's DCS4 4" FINE & COARSE Diamond Combo Sharpening Stones
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Smith Abrasives
Smith's DCS4 4" FINE & COARSE Diamond Combo Sharpening Stones
4.5 out of 5 stars See all reviews (33 customer reviews) | Like (4)
List Price: $19.95
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