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edge pro users, need some advice

Discussion in 'Maintenance, Tinkering & Embellishment' started by hemi1300, Mar 18, 2019.

  1. ejames13

    ejames13

    753
    Mar 30, 2015
    Lately I have been finishing with either 400 grit EP stock stone or 500 grit Shapton Glass and then 3 passes per side on rough side up cowhide strop loaded with 3 micron diamond. The edge coming off the stone can shave and push cut newsprint with the grain (more cleanly with the EP400 stone than the SG500), but after the stropping there is noticeable improvement. Yes, it loses some slicing aggression, but still has some bite and generally seems to cut smoother. Any idea how this can be the case if the apex is being rounded? I wish I had a microscope to see for myself.

    When you finish on the veg tanned cowhide, is that bare leather with no compound?
     
  2. Diemaker

    Diemaker KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    427
    Apr 28, 2017
    Even after removing around .02" of the apex it would still shave nicely, I just had to increase the angle substantially. Whether to use a diamond loaded strop or bare strop depends on the steel, pretty much all my knives prefer a bare strop since my best one is HAP40. I like polished edges so I pretty much sharpen everything to a 4k Matrix stone so keep this in mind.
     
  3. David Richardson

    David Richardson Gold Member Gold Member

    219
    Nov 30, 2018
    A few other tips I've gotten from Diemaker that helped me with these stones:
    • Once you apex the edge go to edge trailing strokes only. Not just for the last one - any stones ones the edge is apexed
    • Fewer strokes that you may expect - he suggests 10 strokes per stone per side after apexing (I think this is right). I'm now spending far less time sharpening and getting sharper edges. I may have needed more than 10 for Maxamet, but not a lot more.
    • Keep your stones clean. Never let them go dry when sharpening, and clean with alcohol and a rag or shop towels after using
    In my experience you should be getting a sharper edge off the EP Matrix stones than off the SharpMaker on high carbide steels. I haven't checked on the easier to sharpen steels.

    Have you tried wood strops? I'm happy to send you a couple to try if you like. I make them using EP blanks and balsa or bass wood. I prefer these to leather, especially for harder and higher carbide steels. Very light passes, of course. I taper down the passes per side and finish with 1-2 per side. (I might do 6 per side, then 4, then 2, then 1.)
     

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