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Anyone build their own pedestal grinder?

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  • Anyone build their own pedestal grinder?

    Have any pictures to share?

    I have some parts that require lots of blending and polishing on the finish and I’m really leaning towards building a pedestal style grinder for them.

    First off I want to be able to slow down the wheel speed through a step pulley and a foot control switch controlling the RPM of the motor.

    Secondly I do not want to be restricted as to the arbor size of wheels I can use on it.

    I have some 1” CR for a shaft, a couple ¾” pillow blocks, 1”, 2”, 3”, & 3-1/2” Al. rounds for pulleys and adaptors and am heading down to the supply house to pick up some closed channel for the frame.

    Any suggestions?

  • #2
    Joe, you might consider building a belt sander. More versatile for about the same amount of trouble.

    If interested, here are some ideas:

    http://www.cnccookbook.com/CCKnifeMakingGrinders.htm

    Cheers,

    BW
    ---------------------------------------------------

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    Try G-Wizard Machinist's Calculator for free:
    http://www.cnccookbook.com/CCGWizard.html

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    • #3
      Thanks Bob

      I have a Wet/Belt Sander that I run 400gt on 1 side and 600gt on the other.

      But these parts are ALL curves. Only 1 flat surface and that is on the back and not machined so it is no problem.

      I'm thinking of 3M CPM wheels

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      • #4
        Maybe a little more then you want to do but if you fit the arbor with a R-8 collet and draw bar then you could quickly change wheels and once trued up they would be trued up when replaced back on grinder.

        Made one years ago that has 3/4" R-8 collet and reversable DC motor with speed control. Use it a lot and happy with it. A must is having speed control protected from grinding dust.


        bunch pictures at
        http://smg.photobucket.com/albums/09...nge%20Grinder/

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        • #5
          Very nice little grinder Gary. That's very similar to the idea I've had for the last few years (at least I thought it was my idea?). My plan included an ER collet for quick and accurate change/(re)mount of wheels, buffs, brush, etc. And my intent is to use a 2hp 3ph motor with VFD for speed, direction, and braking control. There are some other differences, but in general idea, that's pretty much it...
          Russ
          Master Floor Sweeper

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          • #6
            Originally posted by JoeFin
            I have some parts that require lots of blending and polishing on the finish and I’m really leaning towards building a pedestal style grinder for them.
            -I was thinking about it, and may still do it, but I haven't gotten anywhere yet.

            Same idea: Two pillow blocks, a good long bar, and a belt drive down to probably something like an old surplus treadmill motor with a speed control. I'd planned on a 1" bar turned down to 3/4" on one end.

            The idea was only as a buffer, though, no grinding wheels or other 'hard' wheels.

            It wouldn't take much effort to make a nice one, but depending on what parts you have and what you'd need to buy, you might start sneaking up on the cost of a real, dedicated buffer in a big hurry.

            Even the big Baldor buffers can be had for around $300 (plus nontrivial shipping) and they're plug-and-play.

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

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