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convexing the idun

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  • #3546
    Tony Pettersen
    Participant
    • Topics: 4
    • Replies: 29


    well i got a package from weps today containing the ceramic stones, blank leather strop, 14/10 micron paste, .25 Micron Diamond Spray, ,125micron boron. and 14 & 10 Micron Diamond Paste
    since my very first weps order never arrived here in Norway i only had 1 and ,5 micron strops so blending facets when convexing was very tedious..

    so i went 14/10 on the strops to convex and now im in business! :cheer:
    i finished my pro-tech and now its the Fallkniven idun whos next

    the protech got 19/20/21/22 degrees but i was thinking of just 3 angles.
    say 17/19/20 or maybt 22/23/24

    will this be much harder to blend?
    all and any thoughts on the matter will be much appreciated

    i have a 20 degree V-grind now..

    #3552
    wickededge
    Keymaster
    • Topics: 123
    • Replies: 2938

    This should be easy to blend. I did the same w/ my F1 and it came out beautifully. Having 3 little facets (maybe 18, 19 & 20 degrees) will make it easier. Stropping at 18 should reach all the facets and blend them nicely.

    -Clay

    #3553
    Tony Pettersen
    Participant
    • Topics: 4
    • Replies: 29

    ill give 18/19/20 a go and see 🙂

    #3555
    Mark76
    Participant
    • Topics: 179
    • Replies: 2760

    All of the angle sets you suggest should be relatively easy to do. I did a couple of blog posts on this subject: convexing on a WEPS.

    Keep in mind, though, that Fallkniven puts very acute angles on some of their knives. I don’t know what the angle of the F1 is at the edge of the edge, but on my A1 it was slightly over 13 degrees!

    Molecule Polishing: my blog about sharpening with the Wicked Edge

    #3557
    Tony Pettersen
    Participant
    • Topics: 4
    • Replies: 29

    im just finishing up 18/19/20 on the idun with the 1600 ceramic and will be stropping now..

    my girlfriends F1 will be next, thinking on trying a steeper last angle say 18/19/22 just to see if it has any realworld use difference.. this is to much fun
    blending with 14/10 micron is just in another league than the 1/.5 micron 😛

    i wonder if Fallkniven puts such acute angles on all or if its just the guy/gal who did yours
    13 seems over the top

    #3558
    Mark76
    Participant
    • Topics: 179
    • Replies: 2760

    Yes, I was hugely surprised when I found out is was less than 14 degrees. I expected something well over 20 degrees.

    I am curious to know what the angle on the F1 is. You don’t need a goniometer to find out. Just use the Sharpie (marker) trick and try to establish what the most acute angle is at which a stone will still remove the ink from the edge.

    Molecule Polishing: my blog about sharpening with the Wicked Edge

    #3559
    Tony Pettersen
    Participant
    • Topics: 4
    • Replies: 29

    Clay what allignment mark did you use for the F1?

    ill see if i find the factory angle on that one

    #3562
    Tony Pettersen
    Participant
    • Topics: 4
    • Replies: 29

    i did hit the edge at the 20 degree mark on the F1. the swipe is 19.50 to 20.40 on the anglecube on the middle of the blade

    #3563
    Mark76
    Participant
    • Topics: 179
    • Replies: 2760

    Thanks! Quite interesting. It probably confirms what Fallkniven wrote me: that their blades are hand-sharpened.

    Molecule Polishing: my blog about sharpening with the Wicked Edge

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