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Disc Grinder Build

Discussion in 'Grinders' started by dancom, Feb 7, 2018.

  1. dancom

    dancom Dust Maker Best Shop Tool

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    Dear Mother Nature, goddess of polar vortices, grand pusher of high pressure weather systems and icy, death-defying arctic torments.... ah...yet bringer of spring flowers and lawn mowing and heady days in the workshop;

    Please send something that resembles spring this way so I can start fabricating!

    Thank you,

    Dan
    --------------------------------------

    If you are like me, you've been cooped up in the house for what seems like a month or more with the sub-freaking-zero temps in the shop...dreaming up some new tool builds for spring.

    My next project is a super-useful 9" disc grinder, variable speed and reversible.

    Some parts have come in recently. A KB Electronics KBAC-27D, an Ironhorse 1.5 hp four pole motor and a nice looking disc from USA Knifemaker, which I believe is made by Beaumont Metal Works in Texas.


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    There's still some more parts to arrive such as the reversing switch and some fasteners, but everything else is sitting in the living room waiting to be played with; including the steel which my wife is really proud of showing off to guests. (Not!)

    Stay tuned.

    Dan
     
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  2. Kevin Cox

    Kevin Cox KC knives

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    Looking forward to you build .Always good to have a nice disc grinder.
    I have to kick myself in the butt and build one to . Just to many things to do and not enough time.
     
  3. FORGE

    FORGE Maker of the Year Best Knife

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    Dan you are going to find that this will be the most useful tool in your shop. I have a 9 inch and two 12 inch lap wheels in my shop. I also have a variable speed vertical one that I use to for making bolsters and lapping other things I want flat.
    I only use my 2x72 to rough grind blades all my finish work is done on the lap wheel.
    If you want something flat this will do,it whereas a belt grinder will never make anything flat.
     
  4. dancom

    dancom Dust Maker Best Shop Tool

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    Hi Cal,

    What do you use for adhesive?

    I ordered some 3M 08051 Feathering Disc Adhesive as described by Tracey Mickley. I was wondering if that's the only game in town. I ordered from Acklands and it will be here in a month.

    Dan
     
    Last edited: Feb 8, 2018
  5. SDMay

    SDMay Active Member

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    Dan an FYI they have lots of that number in my warehouse. Any Auto Parts Plus store or Bumper to Bumper should be able to get it for you in a day or two at most.
     
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  6. FORGE

    FORGE Maker of the Year Best Knife

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    Dan I have always used Norton number 10 disk adhesive I liked it better than 3M but they don't make it anymore, so I am now getting the 3 M from Acklands.
     
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  7. dancom

    dancom Dust Maker Best Shop Tool

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    I have come to understand that these kinds of adhesives are used a lot in body shops for slap-and-go sanding. I'll call around to the auto parts places. Thanks for the tip!

    Dan
     
  8. SDMay

    SDMay Active Member

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    Its used in the body shops so you can use regular sheet instead of the precut stuff. Less money to sheets then circles.

    No prob on the tip. Glad I can finally help someone out!!
     
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  9. Kevin MacPherson

    Kevin MacPherson Member

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    Dan,
    You can order the discs with adhesive of some sort already on them. Peel and stick.Just peel it off when worn. Works great on my 9" grinder.
     
  10. dancom

    dancom Dust Maker Best Shop Tool

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    Hi Kevin,

    Do you have any recommended brands? I have had some bad experiences with the peel and stick (PSA) I got from Canadian Tire. I ended up having to apply solvent and scrape the adhesive goo off the aluminum disc. :(
     
  11. Kevin Cox

    Kevin Cox KC knives

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  12. dancom

    dancom Dust Maker Best Shop Tool

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    Thanks Kevin. I stopped in at my local NAPA today. They stock the 3M stuff. $22 a tube.

    BTW I love Gesswein. Makes me want to become a jeweler LOL
     
  13. Kevin Cox

    Kevin Cox KC knives

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    That a good price and it’s a real time saver to use it. Made My life easier lol.
    @dancom i sent you a message on your Facebook message not sure it you got it.
     
  14. Kevin MacPherson

    Kevin MacPherson Member

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    Dan,
    Haven't used that 9" grinder in awhile...could never get the blade flat enough against the grinder plate and tended to do more damage to my blades using it. Checked to see the brand on the peel and stick and can't make it out. When i went to peel it off it made a mess so maybe this isn't the best solution after all. Believe I bought at home depot or Princess Auto
     
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  15. dancom

    dancom Dust Maker Best Shop Tool

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    My experience with PSA is heat messes with the adhesive. Grinding steel makes heat and they seem to get stuck really bad. I am hoping that the natural rubber in the feathering disc adhesive is a better solution.
     
  16. FORGE

    FORGE Maker of the Year Best Knife

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    Dan if you really want your lap wheel to preform go to AR Thompsom in Edmonton and get some 1/8 inch rubber gasket material and
    contact cement it to the wheel before you put any paper or glue on it. After gluing take some sandpaper on a piece of wood and grind the surface smooth and flat.
    A lot of people use cork but it does not stand up over time.
    I have been using my wheels for about 20 years, and only changed the rubber once.
    I don't know if the wheel you got has got a 1 degree taper on the face, but if it doesn't I would get one machined on it before using.
    It prevents long blades from getting "picked up" on the other side of the disk.
     
  17. dancom

    dancom Dust Maker Best Shop Tool

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    Thanks for the tips Cal.

    Anything specific I should know about the rubber, EPDM, neoprene or any rubber will work?

    Yes the disc I bough has a 1° beveled face.

    Dan
     
  18. FORGE

    FORGE Maker of the Year Best Knife

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    The stuff I got was a fairly hard orange 1/8 thick rubber gasket material.
     
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  19. dancom

    dancom Dust Maker Best Shop Tool

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    The guys at Norwesco gave me a piece of 1/8" sheet rubber.
     
  20. FORGE

    FORGE Maker of the Year Best Knife

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    FREE ........IS GOOD ...!!!!!!
     
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