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How to use Scotch-Brite belts without washing out the plunge?

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by Storm W, Aug 8, 2019.

  1. Storm W

    Storm W

    266
    Feb 19, 2019
    Basically what the title says. I find it hard to use scotchbrite without washing out my plunge lines.
     
  2. razor-edge-knives

    razor-edge-knives Moderator Moderator Knifemaker / Craftsman / Service Provider

    Apr 3, 2011
    Make the plunge crisp before using scotch brite and when you do, use light pressure with few passes. You will still get some bleed over on the flats though jsyk, but it won't wash them out.
     
  3. Maelstrom78

    Maelstrom78

    Sep 21, 2013
    You most likely have to get your surface finish FINER (much finer) than the scotchbrite finish. Then be as quick as you can.
     
    Stromberg Knives likes this.
  4. Stacy E. Apelt - Bladesmith

    Stacy E. Apelt - Bladesmith ilmarinen - MODERATOR Moderator Knifemaker / Craftsman / Service Provider

    Aug 20, 2004
    Maelstrom has the biggest piece of advice. A Scotch-Brite belt won't take away coarser scratches. Make a GOOD 400 grit finish ( or finer) then use the belt. Placing your shoulder jig at the plunge can keep the plunge crisp. Don't wiggle the blade on the Scotch-Brite belt. Use it just like it was a standard belt, with the blade held at the correct angle. Use just enough pressure to make the finish even.
     
    Storm W likes this.
  5. Stromberg Knives

    Stromberg Knives KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    739
    Jan 3, 2015
    Good advice! This is how I do it, treat it like a standard belt and light pressure.
     
  6. Storm W

    Storm W

    266
    Feb 19, 2019
    It sounds like my problem is to much pressure.
     
  7. Storm W

    Storm W

    266
    Feb 19, 2019
    Second question. I have always used them running wide open. What kind of speed ar you using. I had a clean a45 finish on the but thought that was finer than what it is.
     
  8. AVigil

    AVigil Adam Vigil knifemaker working the grind Knifemaker / Craftsman / Service Provider Platinum Member

    Feb 17, 2009
    You want to solve all those problems? Get rid of that scotch brite belt and get a 400 grit cork belt.

    When you break in the cork belt do not use any polishing compound. Just break it in and use it dry.

    It will leave a nice satin finish with none of the drama the scotch brite brings. It leaves lines crisp and cleans works plunges beautifully.
     
    Coy Ranch, Tin.Man, mknife and 2 others like this.
  9. Storm W

    Storm W

    266
    Feb 19, 2019
    Where were you at 5 this morning. I was going to use cork but couldn't remember where I put them.
     
    AVigil likes this.
  10. Maelstrom78

    Maelstrom78

    Sep 21, 2013
    I run the Scotch-Brite pretty fast.

    I also ha all of the cork belts and they have a really cool nice finish too. I run the higher ones once with green compound ones with green compound though.
     

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