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  • #53316
    Organic
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    • Topics: 17
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    Keep us posted on this when you’ve done the sharpening and sharpness testing (perhaps in a new thread?). I’m interested to see how it turns out.

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    #53339
    Brewbear
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    • Topics: 7
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    I’m interested too!

    BTW Ed, I have several folders with M390 blades, it is my favorite steel by far (for now at least). I have a couple of Spyderco knives but as age goes up, ability to finger flick them open goes down (for me at least) so I’m happier with the Hogue made Doug Ritters RSK Mk1 and Hinderer xm-18. My best effort on a Ritter scored 175 but I only spent 30 minutes or so on it.

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    #53359
    Jeff
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    • Topics: 3
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    Ed that Bess score is excellent.  I’ve sold all brands of folders I have except Spyderco now and keep around 8-12 at a time buying and selling trying different steels.  Keep the odd favourite.  They just have so much steel selection (albeit a lot of them are sprint runs that sell out very quickly) and seem to also spend a lot of R&D on nailing the heat treat.  Anyway, if you find you like the M390, I’d recommend you try something in Cruwear.  Personally I feel I can get it sharper but I don’t have a Bess to quantify that.  I don’t find that either M390 or Cruwear hold their edge as long as S110V.  S110V looses its “just sharpened” edge quickly but then keeps a good working edge for a long time.  I also find that high carbide steels like S110v operate better in real world usage (cardboard, rope, zip ties, etc.)  with a toothier edge although that would likely hurt its Bess score.

    Others I’d really recommend (although they are more tool steels that will patina in case you prefer stainless) are K390 and Rex45.

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    #53361
    45srbest
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    • Topics: 5
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    I’ve been sharpening my paramilitary 2 (cpm s30v) at right on lower line 6 with tip right in the left lower corner of C with the AAG. This is using the lower holes of the AAG and the wE130. Interested to hear what settings other people are using with this knife. I also have a new m390 Para 2 sitting in the box looking at me. It’s probably asking me to please leave it alone!

     

    #53362
    Jeff
    Participant
    • Topics: 3
    • Replies: 32

    I’ve been sharpening my paramilitary 2 (cpm s30v) at right on lower line 6 with tip right in the left lower corner of C with the AAG. This is using the lower holes of the AAG and the wE130. Interested to hear what settings other people are using with this knife. I also have a new m390 Para 2 sitting in the box looking at me. It’s probably asking me to please leave it alone!

    I used the settings shown in this video by Clay.  Worked great for me.  I actually mirrored a Para3 beside the Paramilitary 2 clamped like this to see how it aligned on the AAG and use those settings now on that model.  I find I get a nice even bevel in both cases.  I sharpen all of my Para models to 15dps and that covers a range of steels currently including S110v, Maxamet, Cruwear, 52100, M4, Rex45, and BD1N.

    I used to polish that main bevel right up to 1 micron diamond emulsion and then add a toothier 18dps microbevel with the 800 grit stones.  I liked that edge a lot for an EDC folder, however, now I don’t bother usually with a microbevel.  I just run the main bevel at 15dps and usually stop with the 1500 stones.  Still push cuts newsprint but grabs and cuts fibrous materials with ease.  Over the years through practice and patience my sharpening technique has improved that I can now appreciate how versatile an edge is with a very true apex finished with the diamond stones, no ceramics nor stropping compounds.  At least on a EDC type pocket / multi-use knife.  I think the 1500 stones are about 5 micron.

    Sharpening knives can be a cerebral exercise.  Deciding settings and angels depends on so many factors as well as personal preference.  Steel type, heat treat, blade geometry, style of grind, thickness behind the edge, intended usage, etc, etc, etc …  I too am interested in what others are doing with similar knives.  I often go the the knife setting database to see if anyone has uploaded settings previously on something new to me to sharpen.

    https://www.youtube.com/watch?v=Ku1klPBPPgo

    #53363
    NotSharpEnuff
    Participant
    • Topics: 1
    • Replies: 96

    45srbest, Jeff,

    Here are the Pics I sent MarcH so he has a reference on how I’ve been clamping the S110V PM2.  I didn’t sharpen it, I just clamped it for the reference pics.

    The blue lines are where I took the BESS measurements.  The knife has been in use for over 2 months since the last touch up.

    Ed K.

     

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    #53388
    MarcH
    Moderator
    • Topics: 59
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    I just finished Ed’s PM2.  I sharpened it to 17º per side, just as he had last done.  I used Shapton Glass Whetstones, (these are no longer available).  The progress: Shaptons 500/1000/2000/4000/6000/8000. Then W.E. DLF’s: 3µ/1.5µ/1.0µ/0.5µ. Then leather strops with 4µ then 2µ W.E. diamond emulsions.

    Here are the BESS Scores and photos: (three tests per blade section, tip, mid, and heel),

    PM2-BESS-Scores-sharpened

    PM2-Finished

    PM2-Polished-Bevel

    My sharpening impressions:  I could definitely feel the hardness of the S110V Stainless Steel.  It did take some effort with the first 500 grit Shaptons Stone to remove previous edge damage and profile the bevels to 17º per side.  I did not find the steel to be too chippy, but this is why I use the Shaptons on these hard brittle steels.  The Whetstones are able to sharpen steels without it chipping out whereas I find the diamond stones can’t.  I was pleasantly surprised as the apex leveled and smoothed out with each subsequent finer grit.  Even still the steel does keep a toothiness to it.

    I used scrubbing strokes to start with each sharpening stone.  Then I followed that with alternating side edge leading strokes.  I did spend quite a bit of time with each grit looking to achieve the best results I could.  I find it’s better to do more work, spend more time and give more attention then to not, to achieve the final results expected then to wish I had.

    The DLFs did bring out an impressive mirror polished bevel.  The last stropping phase did smooth off some of the grab of the just sharpened knife edge, leaving an edge that easily sliced newspaper with a whisp.  I will be curious to see how well this edge stands up to EDC use.

     

     

    Marc
    (MarcH's Rack-It)

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