help wanted for mechanical butterfly making

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help wanted for mechanical butterfly making

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  • #318564
    Mariann Wissa
    Participant
      @mariannwissa53594

      Hi

      My name is Mariann and I am a jewellery designer. At present I am designing a pendant consisting of butterfly which can open and close it wings, but I am having real trouble with the technical part of finding a solution for the wings to open and close. I am hoping to find someone who might be able to come up with a clever solution for this. I am quite happy to pay for the service.

      Thank you.

      Mariann

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      #40170
      Mariann Wissa
      Participant
        @mariannwissa53594

        Butterfly to be able to open and close wings

        #318569
        Gary Wooding
        Participant
          @garywooding25363

          What material? Are the wings to be opened and closed by moving them manually or by some mechanical method? How big is whole pedant?

          #318584
          Mariann Wissa
          Participant
            @mariannwissa53594

            I will be making it in metal and the wings will be opened and closed manually. The pendant will be around 3 cm.

            #318606
            JasonB
            Moderator
              @jasonb

              If you solder a piece of tube to each side of the body and a matching tube to each wing you can then cut out alternate sections of the tubes to form the knuckles of the hinge. A pin with a head can pass through to complete the pivot and be peined over at the end so it does not fall out.

              J

              #318612
              Clive Foster
              Participant
                @clivefoster55965

                Jasons tube, pin and peen the head system works well but, depending on the layout of the job, it can be difficult getting cleanly on the head of the pin to peen it without bending unless you make up some tooling to support the hinge and hold the pin in place.

                An alternative is to lightly squeeze one or more of the tubes on one side of the hinge so the pin is held. With careful judgment the squeeze can be made effectively unnoticeable. Given a nice fit between pin and tube very little squeeze is needed. Its possible that one of the loctite retainers carefully worked into the end tube sections would hold things sufficiently well.

                The one time I did something similar I assembled the short sections of tube onto the pin first, squeezed the end ones to hold the pin tight, jigged up the two parts and soldered things together. Naturally a little of the solder worked its way into the wrong place so some careful clean-up was needed.

                Clive.

                #321294
                Mariann Wissa
                Participant
                  @mariannwissa53594

                  Hi

                  Thank you so much for your replies, they are very much appreciated. I realised though that I had not explained my design very well, as I meant for the wings just to be able to fold on top of each other rather than being able to flap up and down like a realistic butterfly. I have enclosed some photos of the design, quickly cut out in paper, (the real piece will be made in metal) just to be able to illustrate what I am trying to achieve.

                  As you hopefully can see from the images I would like the 4 wings to fold on top of each other so when the pedant is closed you can not tell what it is.

                  all-butterflies-small.jpg

                  When the wings unfold it becomes a butterfly

                  I have tried to rivet the wings together but the wings tend to fall down when in the open position.

                  The “butterfly” can either have a body behind it or not depending on what is needed for the mechanics of being able to fold and unfold the wings, as well as to keep them in the open position.

                  As mentioned, if anyone would like to have a go at making a prototype I am quite happy to pay for the service.

                  Thanks
                  Mariann

                  Please excuse grammar & typos; delightfully dyslexic

                  #321306
                  Tim Stevens
                  Participant
                    @timstevens64731

                    So, you don't want the wings to fold like they do on a butterfly, but to move so that they stay in the same plane and pivot around a point (or perhaps two points?) in the wing corner nearest the body in your diagrams.

                    If so, you could attach a short wire normal to the underside of the top wing (hard solder, eg) and drill holes for the pin in the wings below it and the body. In wear, the weight of the wings would hold them closed (looking rather like a moth). To display the wings you would need to be a bit clever (or just manipulate it with your fingers). It should be possible to hang a short cord or chain below the body, which when pulled resulted in the wings opening. But it is going to need some fiddly wirework etc, if it is to look convincing.

                    Regards, Tim (the last apprentice at the Guild of handicraft, Chipping Campden, but that was over fifty years ago)

                    #321309
                    JasonB
                    Moderator
                      @jasonb

                      Looks more like they need to pivot like a fan.

                      You could overcome the tendancy for the butterfly to fold up by introducing a friction layer or some form of spring* to the back of the pivot.

                      If each wing had a slightly protruding "lump" on the back and the wing behind it a matching dimple on the face then that combined with a tension spring would mean each wing would click into place.

                      J

                      * if you search Bellview washer" you will see the typ of spring I am thinking of

                      #321386
                      ega
                      Participant
                        @ega
                        Posted by Tim Stevens on 13/10/2017 15:14:49:

                        Regards, Tim (the last apprentice at the Guild of handicraft, Chipping Campden, but that was over fifty years ago)

                        I remember being taken there as a schoolboy by someone who needed a repair to a silver salver and being particularly struck by the aprons which connected the craftspeople to their benches; I think I was told that the precious sweepings were carefully collected at the end of the day.

                        #321392
                        Speedy Builder5
                        Participant
                          @speedybuilder5

                          I think Jason meant Belleville washer

                          #321395
                          JasonB
                          Moderator
                            @jasonb

                            Yes I did but luckily if you put Bellview into Google it will give you the correct result and alter the spelling for yousmiley

                            #321407
                            Neil Wyatt
                            Moderator
                              @neilwyatt

                              Tiny magnets?

                              #321417
                              KWIL
                              Participant
                                @kwil

                                Magnet for gold and silver? Patent it quick!!

                                #321419
                                Robin
                                Participant
                                  @robin

                                  This isn't a butterfly, it's a moth. Do the wings have to move in unison? What action causes them to open? If it is a straight pull, what do you pull against?

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