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Thread: 2 x 72 belt grinder kit

  1. #1
    Join Date
    Nov 2010
    Posts
    5

    Default 2 x 72 belt grinder kit

    Is there a Canadian equivalent to this:

    http://www.polarbearforge.com/grinder_kit.html

    It'd be nice to avoid border charges. The CAD file is available so I guess that's always an option.

  2. #2
    Join Date
    Nov 2010
    Posts
    5

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    Quote Originally Posted by Greg_M
    The CAD file is available so I guess that's always an option.
    Anyone interested in cutting one for me?

  3. #3
    Join Date
    Dec 2006
    Location
    Westminster, MD
    Posts
    204

    Default

    I have been pondering building a belt grinder for a long time, but I just can not get over the price of all the contact wheels they require, and I haven't found a suitable 3PH motor so I can use a VFD for variable speed.

    That does look like a nice setup though...
    Last edited by kennyd4110; 01-11-2012 at 06:31 AM.

  4. #4
    Join Date
    Aug 2007
    Posts
    454

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    Quote Originally Posted by kennyd4110
    I have been pondering build a belt grinder for a long time, but I just can not get over the price of all the contact wheels they require, and I haven't found a suitable 3PH motor so I can use a VFD for variable speed.
    What's required for suitable?

    Tons of motors on ebay...

  5. #5
    Join Date
    Jun 2006
    Location
    Austin, Texas
    Posts
    15,651

    Default

    Hi Greg,

    The Polar Bear Forge kit is a pre-made set of EERF Grinder parts.

    EERF is free spelled-backward -- it's a take-off of a Bader grinder in the form of .dxf (CAD) files that you bring to a local water-jet shop and get it cut out of plate:

    http://blindhogg.com/eerfgrinder.html




    "I hope this article helps encourage you to build this grinder. The photos below will show the steps in how I built this grinder along with the blueprints necessary to create the grinder.
    The tracking wheel and drive wheel I purchased from Beaumont metalworks. If you have any suggestions or have a question please feel free to email me at blindhogg(atsymbol)aol.com

    Recently Jamie at polarbearforge.com has offered this grinder in kit form that you can purchase if you can not get it cut locally for a decent price."
    "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

  6. #6
    Join Date
    Dec 2006
    Location
    Westminster, MD
    Posts
    204

    Default

    Quote Originally Posted by noah katz
    What's required for suitable?

    Tons of motors on ebay...
    Here are a couple links:
    http://www.beaumontmetalworks.com/ seems to be a HUGE supplier of parts-including contact wheels. Most of the home-built kits are copies of their KMG grinder ore the Bador that Lazlo mentioned.

    The "no weld grinder" is popular also: http://www.mickleyknives.com/html/no_weld_grinder.html but you still need to buy contact wheels. It's very easy to spent well over $500 building one.

  7. #7
    Join Date
    Nov 2002
    Location
    Maine
    Posts
    1,439

    Default

    Grizzly sells a knifemaker's belt grinder with an 8" contact wheel. They sell an optional 10" contact wheel for under $100.00, which is considerably less than I've seen one anywhere else. I used one on a 2x72 grinder I built.

  8. #8
    Join Date
    Mar 2003
    Posts
    3,059

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    Quote Originally Posted by x39
    Grizzly sells a knifemaker's belt grinder with an 8" contact wheel. They sell an optional 10" contact wheel for under $100.00, which is considerably less than I've seen one anywhere else. I used one on a 2x72 grinder I built.
    -Just keep in mind that Grizzly's wheels are drive wheels as well as contact wheels. Meaning that if you want to use one as a free-spinning contact wheel in a KMG-style grinder, you have to bore the center for bearings.

    Doc.
    Doc's Machine. (Probably not what you expect.)

  9. #9
    Join Date
    Nov 2002
    Location
    Maine
    Posts
    1,439

    Default

    Thanks Doc, good point.

  10. #10
    Join Date
    Aug 2007
    Posts
    454

    Default

    Quote Originally Posted by kennyd4110
    The "no weld grinder" is popular also: http://www.mickleyknives.com/html/no_weld_grinder.html but you still need to buy contact wheels. It's very easy to spent well over $500 building one.
    Even easier to spend $500 buying one

    http://www.grizzly.com/products/Knif...r-Buffer/G1015

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