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  • Piloted center drill

    I’m looking for piloted center drill. I had a three piece set in a wood box...it has disappeared. I would like to find another set but really in need of the .224 tool.

  • #2
    Manson Precision Reamers, mansonreamers.com, makes them.
    David Kaiser
    “You can have peace. Or you can have freedom. Don't ever count on having both at once.”
    ― Robert A. Heinlein

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    • #3
      What is a piloted center drill?
      12" x 35" Logan 2557V lathe
      Index "Super 55" mill
      18" Vectrax vertical bandsaw
      7" x 10" Vectrax mitering bandsaw
      24" State disc sander

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      • #4
        “C” piloted center drill/cutter

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        • #5
          I would call that either a countersink or a reamer, depending on it's use.

          A standard center drill such as the one below from Little Machine Shop.com has a small pilot drill to start it and allow a place for the center's tip to go. Then come the larger flutes that cut the surface that the center bears against.
          Click image for larger version

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          It seems that if you want a pilot for a specific caliber, you could press fit a collar on the small drill and then turn it down to the desired diameter.

          Dan
          At the end of the project, there is a profound difference between spare parts and left over parts.

          Location: SF East Bay.

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          • #6
            Originally posted by danlb View Post
            I...A standard center drill such as the one below from Little Machine Shop.com has a small pilot drill to start it and allow a place for the center's tip to go. Then come the larger flutes that cut the surface that the center bears against.
            Click image for larger version

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ID:	1895444...
            That's all I've ever used to create a center. Also use spotting drill to locate a hole before drilling.
            12" x 35" Logan 2557V lathe
            Index "Super 55" mill
            18" Vectrax vertical bandsaw
            7" x 10" Vectrax mitering bandsaw
            24" State disc sander

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            • #7
              Originally posted by Sleddog View Post
              “C” piloted center drill/cutter
              Sir, you would be well served to simply use your indicator to dial in the end of your barrel then use your compound and a sharp tool to cut the center.

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              • #8
                deleted
                Last edited by SilveradoHauler; 10-22-2020, 10:49 PM.

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                • #9
                  That’s exactly the set I had & am looking for. Are yours for sale?
                  When the machine doesn’t allow doing the work through the headstock, cutting accurate new centers is the best alternative. I realize there are new & better ways of dialing in the bore.

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                  • #10
                    deleted
                    Last edited by SilveradoHauler; 10-22-2020, 10:46 PM.

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                    • #11
                      Looks like a VERY nice shop.
                      I recall you posting some pictures of your past work. Always top notch.

                      Hal

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                      • #12
                        deleted
                        Last edited by SilveradoHauler; 10-22-2020, 10:47 PM.

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                        • #13
                          Very nice looking shop.
                          I shot NBRSA matches from the late ‘70 till about 1985. I also went to several Super Shoots as well as some National events. I burned myself out...building Varmint Rifles, BR guns, making bullets. I had a chance to sell my equipment & tooling. I didn’t pull a trigger for over 25 years! I’ve still got 3 BR guns...HV, Sporter & Unlimited all 6PPC. I’ve got a 600 Remington .222 in a Brown Precision stock with a shot out McMillan barrel. I’m going to rebarrel it. My Grandson will use it as a coyote calling gun.

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                          • #14
                            deleted
                            Last edited by SilveradoHauler; 10-22-2020, 10:47 PM.

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                            • #15
                              Here on the Hood Canal i have a 200 count herd of elk as neighbors. The cougars, poachers, and occasional logging truck keep the numbers down. When i used to hunt i used a Siamese Mauser in 45/70. These days i am making and shooting artillery. But not at elk.

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