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  • What is it?

    I think they are for turning on center shafts. they are bout 4 to 5 in long have centers on each end and a flat on the end. I have 1/2 3/8 5/16 if they are suppose to be tapered I can only see about 2 thousand differance. Thanks folks. they have the Name Morse and a differant letter on each size.
    Attached Files
    Ed
    Agua Dulce, So.California
    1950 F1 street rod
    1949 F1 stock V8 flathead
    1948 F6 350 chevy/rest stock, no dump bed
    1953 chevy 3100 AD for 85 S10 frame have a 4BT cummins motor, NV4500
    1968 Baha Bug with 2.2 ecotec motor, king coil-overs,P/S

  • #2
    Look like precision lathe mandrels. .002” taper would be about correct for that length.

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    • #3
      Yep, solid tapered lathe mandrels.
      You press into your part with something like an arbor press, and you can turn an OD with precision off the ID.
      Location: North Central Texas

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      • #4
        Cylinder grinder taper mandrels, I have a rusty set I fished out of a bin, still good enough for use but ugly
        mark

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        • #5
          Yep, mandrels. Perfect for turning flywheels, pulleys, bushings, etc.
          Location: Northern WI

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          • #6
            Originally posted by Galaxie View Post
            Yep, mandrels. Perfect for turning flywheels, pulleys, bushings, etc.
            High school machine shop we had to make one. I can’t remember if we turned the gear blank on it but it was definitely mounted on it when we cut the gear teeth.

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            • #7
              The flat on the one end would be for the drive dog screw.
              Chilliwack BC, Canada

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              • #8
                Originally posted by oxford View Post

                High school machine shop we had to make one. I can’t remember if we turned the gear blank on it but it was definitely mounted on it when we cut the gear teeth.
                You made GEARS in high school machine shop? I made a screwdriver, a plant hanger... Wow, I got robbed.

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                • #9
                  Originally posted by Dan_the_Chemist View Post

                  You made GEARS in high school machine shop? I made a screwdriver, a plant hanger... Wow, I got robbed.
                  This was high school vo-tech not regular high school metal shop. We made a gear but I am sure the shop teacher did most of the setup. List of things we made that first year from what I remember.

                  Drill grinding gauge
                  Above mentioned mandrel
                  2 center punches and a pin punch that was hardened
                  The gear
                  Nut and bolt
                  Small C clamp

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                  • #10
                    Originally posted by Dan_the_Chemist View Post

                    You made GEARS in high school machine shop? I made a screwdriver, a plant hanger... Wow, I got robbed.
                    We made a lamp.

                    yeah.

                    t
                    rusting in Seattle

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                    • #11
                      Originally posted by Tobias-B View Post

                      We made a lamp.

                      yeah.

                      t
                      I made a cutting board out of ash, maple and and some other reddish wood. Still use it. I wish we had a metal shop. JR

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