Make a female thread for a 2 liter Pepsi bottle male thread

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  • spindowner
    Junior Member
    • Sep 2014
    • 5

    Make a female thread for a 2 liter Pepsi bottle male thread

    I would like to make a female thread in a block of aluminum to accept the male thread of a 2 liter Pepsi bottle. The male thread appears to be 1.080" at 10tpi. Any recommendations. Thanks Paul
  • GEP
    Senior Member
    • Jan 2013
    • 836

    #2
    Use the shape of the thread on the bottle to grind the tool bit i am sure it does not have to be as accurate as machine thread. If you do the project make me one

    Comment

    • 1-800miner
      Senior Member
      • May 2010
      • 1508

      #3
      Talk to Custom Thread Grinding. Kernville California. Dennis is the owner.
      He does all the masters for the bottle companies.

      Comment

      • RussZHC
        Senior Member
        • Mar 2010
        • 2411

        #4
        No real advice.

        I am always surprised, though I don't know why I should be, how few threads are involved in many items like those bottles, few threads, don't look really precise, not even complete helix/spirals. Came across one food stuff bottle the other day that was far more cut away, the thread was interrupted around the point of the thread, than thread and even then no issues doing its job.

        Comment

        • TriHonu
          Senior Member
          • Feb 2009
          • 137

          #5
          The threads are standardized by the International Society of Beverage Technologists.
          They have detailed specs available in PDF format. Take a look at http://www.bevtech.org/threadspecs-downloads.asp

          Comment

          • kitno455
            Senior Member
            • Aug 2011
            • 436

            #6
            I did this recently, to make stomp rocket launchers for cub scouts. The bottle is the bellows, and after 10-15 stomps they break. The scouts can screw the bottle on and off themselves without help, instead of the old units which used duct tape to attach the bottles.

            Anyway, about 8-10 years ago, most US beverage makers changed from imperial to metric threads. They are now 27.4mm OD and the pitch is 2.7mm. I had to setup a compound gear set on my lathe to make that pitch.

            allan

            Comment

            • Joel
              Senior Member
              • Jun 2001
              • 3227

              #7
              Originally posted by RussZHC View Post
              not even complete helix/spirals. Came across one food stuff bottle the other day that was far more cut away, the thread was interrupted around the point of the thread, than thread and even then no issues doing its job.
              This is because they are multiple start threads.
              Location: North Central Texas

              Comment

              • DR
                Senior Member
                • Jan 2003
                • 4782

                #8
                Bottle threads, yeah, I've cut some on the CNC mill.

                An inventor had me make a prototype which was basically a short piece of plastic tube with female bottle threads on both ends. The tube was meant to screw two ketchup bottles together. The idea was that a near empty ketchup bottle could be connected vertically and drained into a full bottle so the last bit wasn't wasted. Not a bad idea, although who knows what the market would be. He dropped the idea just as he was about to have an expensive injection mold made when the ketchup company changed their bottle threads.

                Another time I made replacement upper gas tank filler necks for vintage International Scouts. The factory original gas caps leaked when the vehicles were on steep inclines. By adapting a Toyota PU gas cap it cured the leaking gas problem.

                Comment

                • RussZHC
                  Senior Member
                  • Mar 2010
                  • 2411

                  #9
                  Can't get that bevtech.org one to load, not sure if this one is the same thing:



                  bit OT, articles illustrate stuff I would never have thought, reducing the overall height of a bottle cap and putting the threads further down, saves dollars as less plastic is used, shipping costs per unit as more units fit in the same space etc., I gotta learn when to think in the millions and millions of units.
                  Last edited by RussZHC; 03-02-2016, 10:54 PM.

                  Comment

                  • dave_r
                    Senior Member
                    • Feb 2016
                    • 1082

                    #10
                    Probably was 'disappeared' by Heinz

                    Comment

                    • janvanruth
                      Senior Member
                      • Nov 2013
                      • 266

                      #11
                      Originally posted by kitno455 View Post
                      I did this recently, to make stomp rocket launchers for cub scouts. The bottle is the bellows, and after 10-15 stomps they break. The scouts can screw the bottle on and off themselves without help, instead of the old units which used duct tape to attach the bottles.

                      Anyway, about 8-10 years ago, most US beverage makers changed from imperial to metric threads. They are now 27.4mm OD and the pitch is 2.7mm. I had to setup a compound gear set on my lathe to make that pitch.

                      allan
                      27.4/2.7 mm is not a metric thread
                      measuring a fairy tale thread in mm doesnt make it metric

                      Comment

                      • Magicniner
                        Senior Member
                        • Jun 2004
                        • 1075

                        #12
                        Originally posted by janvanruth View Post
                        measuring a fairy tale thread in mm doesnt make it metric
                        Very true, but what would be nice is if someone told us what it was rather than just glibly stating what it wasn't ;-)
                        If it's a "bastard thread" the spec could be set to funny numbers in Metric or Imperial so unless there's an obvious conversion it's actually impossible to say whether it was dreamed up in Imperial or Metric

                        - Nick
                        If you benefit from the Dunning-Kruger Effect you may not even know it ;-)

                        Comment

                        • Magicniner
                          Senior Member
                          • Jun 2004
                          • 1075

                          #13
                          Originally posted by spindowner View Post
                          I would like to make a female thread in a block of aluminum to accept the male thread of a 2 liter Pepsi bottle. The male thread appears to be 1.080" at 10tpi. Any recommendations. Thanks Paul
                          If you know anyone who plays with a CNC mill they should be able do this for you, I made an adapter for the new Soda-Stream bottle on mine,

                          - Nick
                          If you benefit from the Dunning-Kruger Effect you may not even know it ;-)

                          Comment

                          • IanPendle
                            Senior Member
                            • Nov 2010
                            • 308

                            #14
                            Hello

                            Joel has it. Check that it is not a multi start thread. I don't drink cola, otherwise I would check for you. The individual threads in a multi start thread can be very course when cut one by one.

                            Ian

                            Comment

                            • Lew Hartswick
                              Senior Member
                              • Aug 2002
                              • 3664

                              #15
                              Originally posted by janvanruth View Post
                              27.4/2.7 mm is not a metric thread
                              measuring a fairy tale thread in mm doesnt make it metric
                              Sure it does
                              If the units are millimeters, It's Metric. NOW it may NOT be some (one of many) "STANDARDS" but it's metric. :-)
                              ...lew...

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