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  • Having trouble with a surface grinder...

    ... I can't seem to get a good surface finish.



    I'm thinking maybe the stone is too coarse... ? What else could it be?

    Also, does anyone know how to properly cut a keyway in a grinding wheel? For some weird reason this wheel didn't come with one...



    Doc.




    (For the humor-impaired, this is a joke.)
    Doc's Machine. (Probably not what you expect.)

  • #2
    What a grind.

    Doc.

    As is all too evident, that wheel is well and truly shafted - first time I've seen one that is that well screwed as well.

    I've seen some old scrubbers that were in better shape than that - and VERY abrasive and rough they were too - and so they ensured a very rough grind. Perhaps they lacked the shine and lustre that goes with being well-balanced, well dressed and quality assured at a good Finishing School.

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    • #3
      Its dangerous put a guard oh the wheel.
      MBB

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      • #4
        Are we that close to April already?
        - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        Thank you to our families of soldiers, many of whom have given so much more then the rest of us for the Freedom we enjoy.

        It is true, there is nothing free about freedom, don't be so quick to give it away.

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        • #5
          Is that a typical E-Buy ad. ? :-)
          ...lew...

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          • #6
            Originally posted by Doc Nickel
            ... I can't seem to get a good surface finish.

            I'm thinking maybe the stone is too coarse... ? What else could it be?
            Surface grinders are a scam. Just hang a grinding wheel on your radial arm saw and you're all set.
            "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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            • #7
              It ain't the stone

              You had the material hanging off the table. That 1/8 inch acrylic is hard to grind when it is well supported. Have you tried "flood coolant"? Or could it be related to the dreaded "Bearing Preload Syndrome"?

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              • #8
                Looks like a metric wheel on an imperial machine. Have you miked the stone?

                Have you applied Sodium Pentothal to "true the stone". Sometimes they will lie about being round. Sodium Pentothal is the only way to get the truth out of them.

                Bill
                Last edited by RancherBill; 01-14-2009, 12:11 PM.

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                • #9
                  I can't see the problem
                  If it does'nt fit, hit it.
                  https://ddmetalproducts.co.uk
                  http://www.davekearley.co.uk

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                  • #10
                    Grinding Wheel?

                    Doc...Looks to me like you need a bucket of prop wash and a trombone stretcher to get that rig working
                    Jim (KB4IVH)

                    Only fools abuse their tools.

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                    • #11
                      Simple mistake really.
                      That setup is known as the arbor surfacing method where the wheel is located at the outboard end for flywheel effect only and never to be used for grinding. Wrap the arbor in emery cloth and surface away.

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                      • #12
                        Originally posted by Doc Nickel
                        Also, does anyone know how to properly cut a keyway in a grinding wheel? For some weird reason this wheel didn't come with one...

                        Doc.
                        I used my flo-jet...works like a damn!!!
                        Ernie (VE7ERN)

                        May the wind be always at your back

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                        • #13
                          Originally posted by lazlo
                          Surface grinders are a scam. Just hang a grinding wheel on your radial arm saw and you're all set.
                          Exactly - it's so simple!

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                          • #14
                            The shaft is to short and you need to use flood coolant with it directly on the grinding wheel.
                            It's only ink and paper

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                            • #15
                              I aint even going their.
                              Every Mans Work Is A Portrait of Him Self
                              http://sites.google.com/site/machinistsite/TWO-BUDDIES
                              http://s178.photobucket.com/user/lan...?sort=3&page=1

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