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Feedback on DUMORE toolpost grinder

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  • Feedback on DUMORE toolpost grinder

    EDITED: 1-19-07
    Thanks Gents-
    You can now disregard this topic because today I picked up a LIKE NEW Cuttermaster Surface O.D., I.D. tool & cutter grinder! Look for pics in an upcoming post. It came with about $3000 in accessories!! I traded a bunch of crap (I mean good stuff) that has been laying around in the shop for it for a price that was almost criminal!


    Good day gentlemen,
    I am looking to purchase a Dumore toolpost grinder 57-031 for my lathe, and to set up as a surface grinder on my mill for flat grinding.
    If any of you have this type of grinder and could leave feedback on it's performance, performance for the money, and durability I would appreciate it. It is used so it is not an option to go with a Themac. It's condition is superb with original grinding wheels and attachments, some of which have never been used.
    I also placed a thread on the PM board as well.
    Thanks in advance.
    Last edited by YankeeMetallic; 01-19-2007, 04:19 PM.
    Duke Reno / Yankee Metallic Metalcraft

  • #2
    Yank',

    Toolpost gridners are a poor substitute for dedicated machines.

    The one you're looking at is a cut above some of the smaller models, but still performance-wise it comes nowhere near a machine like a cylindrical grinder which does the same work.

    Surface grinding in a mill using this? Only in a pinch. Don't expect it to do much of a job.

    On edit: I should have mentioned the toolpost grinder on a mill will have problems because to do surface grinding you generally take light FAST passes, most mills have no way to traverse the table fast at a steady pace. You definitely don't want to try surface grinding if you have to feed by hand with the table crank.
    Last edited by DR; 01-18-2007, 05:15 PM.

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    • #3
      Originally posted by DR
      Yank',

      On edit: I should have mentioned the toolpost grinder on a mill will have problems because to do surface grinding you generally take light FAST passes, most mills have no way to traverse the table fast at a steady pace. You definitely don't want to try surface grinding if you have to feed by hand with the table crank.
      So what happens on a surface grinder with manual feed? Is it just set up with a leadscrew pitch to feed really fast?

      BTW, mill power feed = almost essential accessory and not that expensive:

      http://www.thewarfields.com/MT/CCMillPowerFeed.html

      Also, didn't mention the usual complaint: "I don't want abrasive grit fouling up my lathe and mill!!!!"

      FWIW, Themac is another name that comes up for toolpost grinding.

      Best,

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

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

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      • #4
        Surface grinders I have used have had rack & pinion, cable & drum or hydraulic table drives. None had leadscrews.

        Joe

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        • #5
          A TP grinder definitely has a place in my shop. It's absolutely necessary for some of my tooling. It's not meant to be a surface grinder and a surface grinder is useless as tool post grinder. It's apples and oranges as both have a purpose. I have an old cast iron Dumore #44 and like it. I can't say about the new ones. I don't much care for the newer method of selling the spindles $eparate. If a bearing goes bad or you mess up the spindle shaft, be prepared to get a second mortgage to replace it.

          My problem at the moment is finding a replacement belt.

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          • #6
            CCWKEN,
            This link will get you to what you need.

            http://www.nolansupply.com/supermac....+Post+Grinders

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            • #7
              I bought a #57 off Ebay a few years ago. Made up an adapter to mount it on my 12X36 lathe but haven't actually used it yet, other than to run it for a few hours to check function. They sure run nice and quiet.

              Comment


              • #8
                My problem at the moment is finding a replacement belt.
                I get my flat belts and grinding wheels from McMaster-Carr. They are of excellent quality at a price that is a tiny fraction of what DuMore charges.

                Google McMaster-Carr and then use their excellent search function. They can supply any length belt you might need.

                Orrin
                So many projects. So little time.

                Comment


                • #9
                  Thanks Gents-
                  You can now disregard this thread because today I picked up a LIKE NEW Cuttermaster Surface O.D., I.D. tool & cutter grinder! Look for pics in an upcoming post. It came with about $3000 is accessories!!
                  Duke Reno / Yankee Metallic Metalcraft

                  Comment

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