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    ferruled connectors

    Duet Hardware and wiring
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    • swrightlast
      swrightlast last edited by

      Could someone post pics of their wired board, in particular where to use the ferruled connectors?

      1 Reply Last reply Reply Quote 0
      • Veti
        Veti last edited by

        the ferule connectors are for the cable for voltage in, the hotend and the heated bed

        1 Reply Last reply Reply Quote 0
        • PaulHew
          PaulHew last edited by

          Basically, anything with a screw down connection
          0_1567251408000_IMG_20190831_123525.jpg
          0_1567251421052_IMG_20190831_123519.jpg
          0_1567251430427_IMG_20190831_123510.jpg
          HTH

          RailCore II - Duet Mini + 1LC, Voron V0.1 - Duet Mini
          Voron 2.4 disassembled..... Waiting for the RailCore Mini....

          1 Reply Last reply Reply Quote 0
          • swrightlast
            swrightlast last edited by

            Thanks for the speedy reply!

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            • dc42
              dc42 administrators last edited by

              The ferrules are important for the VIN power and heated bed. Less so for the hot end heater connection.

              Duet WiFi hardware designer and firmware engineer
              Please do not ask me for Duet support via PM or email, use the forum
              http://www.escher3d.com, https://miscsolutions.wordpress.com

              1 Reply Last reply Reply Quote 0
              • Dugee
                Dugee last edited by Dugee

                what size are these ferrules? I need to replace mine at the heated bad

                1 Reply Last reply Reply Quote 0
                • A Former User
                  A Former User last edited by

                  @Dugee Ferrules are sized for the wire, not the terminal.

                  1 Reply Last reply Reply Quote 1
                  • Dugee
                    Dugee last edited by

                    One of the reasons I like the general 3d community is that you can ask the stupid/obvious question without being patronised or belittled. Everyone is always keen to help the beginner.

                    Many thanks.

                    1 Reply Last reply Reply Quote 2
                    • T3P3Tony
                      T3P3Tony administrators last edited by

                      I have added a note about ferrules to the documentation:

                      https://duet3d.dozuki.com/Wiki/Connector_and_spare_part_numbers#Section_Ferrules

                      Duet Hardware Designer
                      www.duet3d.com

                      1 Reply Last reply Reply Quote 1
                      • A Former User
                        A Former User last edited by

                        Risky business specifying size according to colour; while there are a few standards to choose from, you can also get almost any size in any colour. While it'll be correct for the ones supplied by Duet3d the end user can easily end up with a different size if ordering new ones based on colour.

                        T3P3Tony zapta 2 Replies Last reply Reply Quote 1
                        • T3P3Tony
                          T3P3Tony administrators @Guest last edited by

                          @bearer exactly why i have the mm^2 in the documentation.

                          Duet Hardware Designer
                          www.duet3d.com

                          A Former User 1 Reply Last reply Reply Quote 0
                          • A Former User
                            A Former User @T3P3Tony last edited by

                            @T3P3Tony yes, maybe i should have been clearer; I'd put the size first to emphasize size instead of colour.

                            T3P3Tony 1 Reply Last reply Reply Quote 0
                            • T3P3Tony
                              T3P3Tony administrators @Guest last edited by

                              @bearer fair enough - I have updated it to make it clearer.

                              Duet Hardware Designer
                              www.duet3d.com

                              1 Reply Last reply Reply Quote 0
                              • mihaitintea
                                mihaitintea last edited by

                                But how do I correctly fit those ferruled connectors into the terminals ? Do I flatten them first with pliers before putting them into the terminals and tighten the terminals' screws, or do I put the ferruled connectors as they originally are ("cylindrical", not mechanically deformed -- flattened) into the teminals and force-screw the terminals's screws until they mechanically flatten the ferruled connectors ?

                                JoergS5 Phaedrux 2 Replies Last reply Reply Quote 0
                                • JoergS5
                                  JoergS5 @mihaitintea last edited by

                                  This post is deleted!
                                  1 Reply Last reply Reply Quote 0
                                  • Veti
                                    Veti last edited by

                                    they are meant to be used with a ferrule crimp tool.

                                    1 Reply Last reply Reply Quote 0
                                    • Phaedrux
                                      Phaedrux Moderator @mihaitintea last edited by

                                      @mihaitintea Pliers don't really work very well. Ideally you'd use crimpers meant for ferrules that compress them in all directions to create a tight pinch. Pliers or vice grips can be used, but you risk damaging the wires or creating a poor mechanical crimp.

                                      https://www.google.com/search?q=crimping+bootlace+ferrules&oq=crimping+boot&aqs=chrome.1.69i57j0l5.6576j0j7&sourceid=chrome&ie=UTF-8

                                      Z-Bot CoreXY Build | Thingiverse Profile

                                      1 Reply Last reply Reply Quote 1
                                      • dc42
                                        dc42 administrators last edited by

                                        I use a ferrule crimping tool that I bought from Maplin, who sadly went bust. A search on eBay UK turned up this https://www.ebay.co.uk/itm/Ferrule-Crimper-Cable-Tube-Crimping-Plier-Tool-1200X-Wire-Terminal-Connector-Set/392118937290 and several other listings for similar products.

                                        Duet WiFi hardware designer and firmware engineer
                                        Please do not ask me for Duet support via PM or email, use the forum
                                        http://www.escher3d.com, https://miscsolutions.wordpress.com

                                        1 Reply Last reply Reply Quote 1
                                        • A Former User
                                          A Former User last edited by

                                          There is a wide range of types of crimping tools, while I tend to prefer the sort of D shaped dies the smallest terminals used on the Duet works best with square type of crimpers, and not the type that create extremely serrated sides.

                                          So the type dc42 links to is probably the best bet.

                                          1 Reply Last reply Reply Quote 0
                                          • swrightlast
                                            swrightlast last edited by

                                            Bought a ferrule crimping tool.....problem solved.

                                            1 Reply Last reply Reply Quote 0
                                            • mihaitintea
                                              mihaitintea last edited by

                                              Hello

                                              Thanks for the answers but I believe I did not make myself very well understood.

                                              The ferrule connectors that I am talking about are already crimped to the wires, from the factory.

                                              I was talking about tightening the ferrule connectors into the Duet3D board terminal blocks.

                                              The out-of-the-box ferrule connector is a hollow tube. One end of this tube is factory-crimped to the wire, and the other end of this tube is free and goes into Duet's terminal blocks.

                                              Do I tighten this free end of the tube in the Duet board's terminal block until the tube gets mechanically deformed ? Or do I do the flattening myself (e.g., using pliers) until the connector gets shaped as a flat rectangle, and put that flattened end of the connector in Duet's terminal blocks and then tighten those screws ?

                                              Which way is best ? In time, which of these variants is the most reliable (i.e., does not need to be pereiodically verified and tightened again)

                                              Thanks and regards

                                              A Former User grizewald 2 Replies Last reply Reply Quote 0
                                              • A Former User
                                                A Former User @mihaitintea last edited by

                                                @mihaitintea said in ferruled connectors:

                                                Do I tighten this free end of the tube in the Duet board's terminal block until the tube gets mechanically deformed ?

                                                Yes, after crimping the ferrule onto the wire it will have one of several shapes; this goes straight into the terminal block and you tighten down the screw in the terminal according to the torque for the terminal. If that results in the ferrule further deforming then thats ok.

                                                1 Reply Last reply Reply Quote 1
                                                • grizewald
                                                  grizewald @mihaitintea last edited by

                                                  @mihaitintea said in ferruled connectors:

                                                  The out-of-the-box ferrule connector is a hollow tube. One end of this tube is factory-crimped to the wire, and the other end of this tube is free and goes into Duet's terminal blocks.

                                                  Do I tighten this free end of the tube in the Duet board's terminal block until the tube gets mechanically deformed ? Or do I do the flattening myself (e.g., using pliers) until the connector gets shaped as a flat rectangle, and put that flattened end of the connector in Duet's terminal blocks and then tighten those screws ?

                                                  Here's the kind of ferrule that you should be using:

                                                  alt text

                                                  One end is insulated to prevent any chance of a short. The wire is then stripped so that the wire is the same length as the exposed metal part of the ferrule. The wire is inserted into the ferrule and crimped.

                                                  alt text

                                                  If the manufacturer didn't strip the wire long enough, so that metal tube is not filled all the way to the end with wire, simply cut the end of the ferrule off with some side cutters so that you can see the crimped wire at the end of the metal tube.

                                                  Then insert the ferrule into the connector and tighten down the retaining screw while supporting the connector against the force of tightening the screw down.

                                                  1 Reply Last reply Reply Quote 3
                                                  • mihaitintea
                                                    mihaitintea last edited by

                                                    Dear Sir,

                                                    Thank you so much for the detailed explanation. That kind of knowledge is either gathered from advice as you provided (truly kindly and for free), or hard-learned through -- hopefully not ! -- unfortunate experiences. Fire risk is something that should be taken seriously and thoroughly adviced by whoever is selling whatever may expose buyers to it -- including Amp-consuming devices such as 3D printers.

                                                    Many thanks and wish you the best.

                                                    Truly yours
                                                    Mihai

                                                    1 Reply Last reply Reply Quote 1
                                                    • zapta
                                                      zapta @Guest last edited by

                                                      @bearer said in ferruled connectors:

                                                      Risky business specifying size according to colour...

                                                      I use the smallest ferrule that fits the wire.

                                                      A Former User 1 Reply Last reply Reply Quote 0
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