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220 Grit Belts

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by Carterwhopkins, Oct 17, 2019.

  1. Carterwhopkins

    Carterwhopkins KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    224
    Dec 12, 2012
    Looking for advice on long lasting 220 grit 2x72 belts. I have used belts from many suppliers & brands and have not found one that lasts for more than one blade. I am making chef knives, so the blades are longer and they are all carbon steel 62-65Rc. From a solid 220 finish, I get good results with Trizact and ScotchBrite...my 120s are ok, just seems the 220 is the weak link.
     
    Last edited: Oct 18, 2019
  2. DeadboxHero

    DeadboxHero

    Mar 22, 2014
    If you have a VFD and a water misting set up you could play with a 3M 675L Diamond Micron Film belt 75um(~220grit)
    Use with Light touch.

    Each belt is $75 though.

    Might also try a SiC Cork Belt.
     
  3. AVigil

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

    Feb 17, 2009
    Norax u936 engineered ceramic. You are going to pay for it though at around $12+/ea
     
    coldsteelburns likes this.
  4. john april

    john april KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Feb 27, 2006
    how many knives do the last avigil ?
     
  5. AVigil

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

    Feb 17, 2009
    I use one for only sharpening, it is like grinding on a stone and am on the same one for 3 years

    They are going to last longer then pretty much any thing else. They can be used down to the backing and are a used by many for their surface grinders. They are long lasting and flat.

    I prefer AO Hermes 346 in 220, I like the way it cuts and how it blends in the plunge area.
     
    john april likes this.
  6. Jason Volkert

    Jason Volkert KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    236
    Nov 25, 2018
    I have used the Norax 220 ceramic its no joke. It is as hard as a rock like Adam said but they suck for cleaning up plunges
     
  7. Carterwhopkins

    Carterwhopkins KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    224
    Dec 12, 2012
    Thanks guys....I will look at the Norax and Hermes, I use 120 in ceramic and have not seen a 220 ceramic. I can kill a Norton Bluefire Zirconia in a couple of minutes and an AO belt quicker. Actually, the belts do still work, but not optimally, and with my chef knives, the edge is so thin that I can overheat it in a millisecond. I am not worried about plunges, don't do them, just taking the finish to higher than 120....I actually start hand sanding at 220, though I use a Trizact and ScotchBrite before hand sanding. Also, all my sanding, on the grinder and hand, is down the length of the blade.
     
    Last edited: Oct 18, 2019
    Andre Basset likes this.
  8. HSC ///

    HSC /// KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Nov 7, 2012
    3m microfiinishing film in 100 mic and then goto 60 mic and then 40 or 30 mic.
     
  9. Scaniaman

    Scaniaman

    92
    Jun 15, 2012
    What about trizact gators? I just started using them and love them.
     
    Fallbrook Forge likes this.
  10. AVigil

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

    Feb 17, 2009
    Good belt as well, just have to be careful they often do not stay flat and can dish out in the center making you wonder why your grind is not even.

    I even out the grit buy using some 50 grit backed by a flat bar.
     
    Scaniaman likes this.
  11. bmilleker

    bmilleker Gold Member Gold Member

    380
    Nov 26, 2012
  12. AVigil

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

    Feb 17, 2009
  13. timos-

    timos- KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Oct 22, 2012
    I use the gator belts...they last and cut very well, i use them at high speed and low speed. A300 to A160 to A45...sometimes I get one that bumps real bad and its basically junk...especially in the a160 size for some reason. They will not work on 20cv but they do just fine with aebl and basic carbon...I use them as slack belt to convex and get consistent convexing from them.

    edit to add:

    A300 with a very light touch to clean up my blaze 120 grit inconsistencies, then on to a160, a65, the I use the a45 to highlight anything uneven.
     
    Robert Erickson likes this.
  14. Robert Erickson

    Robert Erickson KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Feb 2, 2014
    I pretty much do what @timos- does for the majority of my blades. I hand sand pretty much everything so that routine makes hand sanding less of a chore.
    For high alloy steel like 10V, S110V etc, I do a belt finish. I use X weight ceramics to do 99% of the grinding and then finish with 220 grit ceramic 3V 707's sprayed with WD40. They still don't last long with those alloys but give a nice satin finish. I use a special rotary platen setup for this final stage. The rubber backing has some forgiveness to it and allows for a superior satin finish in my opinion. I got the idea for this set up from @Matthew Gregory in this post from a year ago. https://www.bladeforums.com/threads...rs-c-plate-and-radius-platen-chiller.1557823/
     
  15. bmilleker

    bmilleker Gold Member Gold Member

    380
    Nov 26, 2012
    That's exactly how I get my plunges! So, what belts am I using then? Or is it just a different backer weight?
     
  16. AVigil

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

    Feb 17, 2009
    Here is what I am talking about. They are flat and very rigid at the edge.
     
  17. Marc Cooper

    Marc Cooper Platinum Member Platinum Member

    45
    Apr 7, 2019
    I agree. I have the full grit range of U936 belts and love em.
    Especially love the X200 for sharp plunge lines.
     
  18. bmilleker

    bmilleker Gold Member Gold Member

    380
    Nov 26, 2012
    I break the edge so they can round. I am using x65 and x45. Seems like they are the same as what I'm using.
     

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