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Cant cut a Post It….laying on wood

Recent Forums Main Forum Cant cut a Post It….laying on wood

This topic contains 5 replies, has 4 voices, and was last updated by  MarcH 03/10/2019 at 5:52 pm.

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  • #49667

    Tom Nikitas
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    • Topics: 2
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    <p style=”text-align: left;”>Cant cut a Post It….. ???  Why?</p>
    A Puma pocket folder marked RC 15.  I’m thinking that may be the problem.  However, using a Lansky that was given to me.  I’ve had no probs with paper slicing, shaving, polishing with the previous 15 ea variety from cheap to half decent.  This won’t do any of the above after working through Med diamond, fine diamond, 1000 ultra fin stone then sapphire stone.

    The matching angles were 20° & 25°.

    I do have Mike’s recently posted WE for sale in process of living with me.  C’mon Mule!!!

    Izzit just too soft to get a nice edge.  I did take my time in front of the tube, taped blade, black marker, retired machinist skill set – but no joy.  I’m returning this tomorrow at church after picking it up today.  I’d sure like to know why my efforts were futile.  If it’s pure noobishness and I know I have a ton to learn, so be it – but the other decent results leave me wondering.

    I hope I can get an educated answer for tomorrow’s  delivery.  Thanks in advance guys – Tom out

    #49668

    airscapes
    Participant
    • Topics: 7
    • Replies: 104

    As a Newbie, I can tell you it is non broken in stones and Newbie..

    You will need to sharpen at least 10-15 knives Before the stones are broken in.  Results will get better as you go.

     

    1 user thanked author for this post.
    #49670

    Tom Nikitas
    Participant
    • Topics: 2
    • Replies: 6

    The L set was used before it was gifted as the owner moved up to a WE. I had sharpened 15 or so knives w it to the degree mentioned above.  Can not get a fine edge.  Anyone else want to take shot at this please?

    #49672

    Organic
    Participant
    • Topics: 16
    • Replies: 806

    I think you’re all misunderstanding the situation here. Tom does not have a Wicked Edge sharpener. He is using a Lansky.

    If you’re having trouble on a specific knife then I would make sure you formed a burr at the lowest grit. If you can’t get a burr then I would guess that the problem is that the knife has a bad heat treatment.

    #49675

    Tom Nikitas
    Participant
    • Topics: 2
    • Replies: 6

    Re bad heat treat: having done this more than once at the shop furnace level, I’m wondering if 15 on the C scale is much, if any, “heat treatment”. I forget what dead soft is but it takes at least mid 30s to be considered “tough” and at least mid 40s for wear tough.

    I had a burr/wire edge…..  /:

    #49678

    MarcH
    Moderator
    • Topics: 56
    • Replies: 1725

    Tom I believe the number 15RC is a model indicator rather then a hardness indicator, after looking at images of Puma Folding Knives I saw one was labeled 105RC and there is not a steel that hard.

    Marc
    (MarcH's Rack-It)

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