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Review Wuertz Surface Grinding Attachment

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by Marc Cooper, Oct 5, 2019.

  1. Marc Cooper

    Marc Cooper

    60
    Apr 7, 2019
    Hey All

    I wanted to give a big shout-out to Travis and Lisa over at Wuertz Machine Works.

    I have a KMG TX Grinder but I wanted a way to flatten and take-down full knife surfaces in a precision manner. After some consideration, I went with their Surface Grinding Attachment for KMG machines.

    I used it today and I have to say I am absolutely blown away by the precision of this attachment. He says that an experienced user can get down to 0.001" accuracy. I have very limited machining background and I was able to get down to 0.001" with less than 30 minutes practise.

    Some quick tips:

    1. Go slow. Take very light cuts to minimize the heat and get a flawless finish;

    2. I got best results from a Norton U936 X45 (320 Grit) Ceramic structured abrasives;

    3. Metal dust inevitably clings to the magnetic belt while grinding. Annoying but unavoidable and very easy to clean;

    4. For perfect flat finishes, always use a new or at least good condition belt;

    5. Buy the dial option. It's cheap and allows you to make perfect adjustments. An absolute must!

    This is an amazing product and I wanted to recommend it to anyone here!
     
  2. Tom Lewis

    Tom Lewis

    Feb 24, 2000
    I have one. Very well made.
     
  3. I have one and it does work well. Here’s a few things I learned.

    You can put 2” wide painters tape over the magnetic table and that will prevent it from loading up with metal dust. Just pull it off when done on each side.

    Removing a blade can be a pain at times. I pulled the guts out of a piece of paracord, so I can get it to lay flat. Then you can push it into one of the channels, underneath the blade, wrap it around your fist, push your thumb against the magnetic table, and pull. The blade usually just comes right off.

    Belt bump can cause a wavy finish. I’ve found that trizact belts work real well, because the abrasive is built up higher, or as high as the seam. You can also use a diamond abrasive sponge or any diamond abrasive to sand down the abrasive side of the seam on the belt.
     
    Storm W, soplo, Drew Riley and 4 others like this.
  4. ryankim3612

    ryankim3612

    1
    Feb 20, 2014
    Great info. Thank you gents!
     
  5. Don Hanson III

    Don Hanson III KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Oct 3, 2002
    I have one on a kmg, works great!
     
  6. Willie71

    Willie71 Warren J. Krywko. Part Time Knifemaker Knifemaker / Craftsman / Service Provider

    Feb 23, 2013
    I’m considering one. It looks better than the Oregon one, but the price is much steeper.
     
  7. Don Hanson III

    Don Hanson III KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Oct 3, 2002
    It's worth the price. Very high quality. Also great for tampering tangs.
     
    Willie71 likes this.
  8. Willie71

    Willie71 Warren J. Krywko. Part Time Knifemaker Knifemaker / Craftsman / Service Provider

    Feb 23, 2013
    im thinking buy once, cry once. It’s an investment for sure, but the OBM would be plenty good for prepping Damascus pieces. On the other hand, I can’t remember ever regretting a top of the line item once I got it.
     
  9. Tom Lewis

    Tom Lewis

    Feb 24, 2000
    "Buy quality and only cry once."
     
  10. weo

    weo KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Sep 21, 2014
    What size is the tooling arm on the TW90?
    I've been looking at this SG well, but I have an OBM grinder and they have 1.5" square arms.
     
  11. Tom Lewis

    Tom Lewis

    Feb 24, 2000
    1 1/4" square
     
  12. weo

    weo KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Sep 21, 2014
    Thanks Tom. See any problem with using 1/2" shims or should I go with the OBM grinder?
     
  13. Fallbrook Forge

    Fallbrook Forge

    Jan 1, 2006
    Travis makes a SG for the KMG which uses the 1.5” tooling arm
     
    jll346, Willie71 and Don Hanson III like this.
  14. A. Brett Schaller

    A. Brett Schaller KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    787
    Mar 22, 2001
    I have one and I love it. I actually finish blade flats to 400 grit with it using a Gator belt. Cuts finishing time considerably.
     
  15. Jesse Latham

    Jesse Latham

    697
    Jul 4, 2010
    I built my own. All of my blades flats and ricasso are finished on it.
     
    RuaridhHunter likes this.
  16. DustinY

    DustinY KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    715
    Dec 29, 2016
    annnnnd this was the nail in the coffin, ordered today.
     
    jll346 likes this.
  17. synthesist

    synthesist So many knives so little time

    931
    Sep 14, 2004
    Whewwwwwww I thought I was thru with making knives but I seriously want to buy a grinder and surface attachment from Travis. My wife is gonna faint.
     
    Willie71 likes this.

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