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    Duet3D announces new tool board at FormNext

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    • jay_s_ukundefined
      jay_s_uk @fcwilt
      last edited by

      @fcwilt the RRF-36 is shaped to mount on the rear of a nema 14

      Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

      fcwiltundefined 1 Reply Last reply Reply Quote 0
      • fcwiltundefined
        fcwilt @jay_s_uk
        last edited by

        @jay_s_uk said in Duet3D announces new tool board at FormNext:

        @fcwilt the RRF-36 is shaped to mount on the rear of a nema 14

        There must be more to that. A NEMA 14 is square. The RRF-36 is not.

        Frederick

        Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

        jay_s_ukundefined A Former User? 2 Replies Last reply Reply Quote 0
        • jay_s_ukundefined
          jay_s_uk @fcwilt
          last edited by

          @fcwilt round nema 14's aren't square... https://www.omc-stepperonline.com/round-nema-14-bipolar-0-9deg-8ncm-11-33oz-in-0-65a-36x20mm-4-wires-14hr08-0654s
          they're now also the most popular type of motor to use on an extruder

          Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

          fcwiltundefined 1 Reply Last reply Reply Quote 1
          • fcwiltundefined
            fcwilt @jay_s_uk
            last edited by

            @jay_s_uk

            Well now it makes some sense.

            Thanks.

            Frederick

            Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

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

              @fcwilt Let me guess, back in math class you were the one to yell out Pie aint square, pie are round . Right?

              fcwiltundefined 1 Reply Last reply Reply Quote 3
              • fcwiltundefined
                fcwilt @A Former User
                last edited by

                @KenW

                No, not that I recall.

                It just seems to me that they made that shape to fit onto/into something else where that particular shape was well suited.

                I doubt they picked that shape for artistic reasons.

                Frederick

                Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

                A Former User? droftartsundefined 2 Replies Last reply Reply Quote 0
                • A Former User?
                  A Former User @fcwilt
                  last edited by

                  @fcwilt Southern humor does not translate well I take it. The complete version of that one is.
                  Pie aint square. pie are round, cornbread are square.

                  1 Reply Last reply Reply Quote 0
                  • droftartsundefined
                    droftarts administrators @fcwilt
                    last edited by

                    @fcwilt I don't know what the design parameters of the board, but you can guess from these pictures:
                    alt text alt text
                    It doesn't fit behind the motor, it fits on the side, but it is the same width and height as the motor and extruder. This picture makes it look big, but that's a NEMA 14 round stepper, it really is tiny and light, even compared to a Hemera. Connections are forward and back, rather than up or down, and the mounting is very specific to the Roto extruder (it has the same spaced mounting holes on the other side of the extruder). Connectors are the standard ones E3D fit to their heaters, fans and thermistors, so they just plug straight in. Only the CAN connector exits from the top. There's a hot end fan on the other side, and I don't know where a part fan would fit on. It looks like the board could have been square, but for the top mounting hole. Probably the first Duet board with rounded corners - someone asked at Formnext why we didn't put rounded edges on our boards, and I pointed them towards @T3P3Tony!

                    Ian

                    Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                    jay_s_ukundefined 1 Reply Last reply Reply Quote 0
                    • jay_s_ukundefined
                      jay_s_uk @droftarts
                      last edited by

                      @droftarts and the CAN connector is the same one that's been adopted by Mellow and BTT (XT30 2+2)

                      Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

                      1 Reply Last reply Reply Quote 0
                      • Surgikillundefined
                        Surgikill
                        last edited by

                        Well, looks like the roto is available for purchase through filastruder. Going to wait to purchase until the documentation is available.

                        Surgikillundefined 1 Reply Last reply Reply Quote 0
                        • Surgikillundefined
                          Surgikill @Surgikill
                          last edited by Surgikill

                          Eh, I just found some basic documentation and max ambient printing temp is 40C. Think I'm going to have to pass on this extruder.

                          o_lampeundefined 1 Reply Last reply Reply Quote 0
                          • o_lampeundefined
                            o_lampe @Surgikill
                            last edited by

                            @Surgikill said in Duet3D announces new tool board at FormNext:

                            max ambient printing temp is 40C

                            Can you quote this or add a link for us?
                            I wonder if that's related to the 3d printed heatsink? Maybe it's thermal conductivity is too low.
                            Funny enough they dont conduct heat from the stepper, but added a thermal barrier between.

                            jay_s_ukundefined o_lampeundefined 2 Replies Last reply Reply Quote 0
                            • jay_s_ukundefined
                              jay_s_uk @o_lampe
                              last edited by

                              @o_lampe must be this bit he's quoting
                              https://beta.e3d-online.com/pages/help-centre-roto#:~:text=Performance Characteristics,temperature%3A 40°C

                              Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

                              Surgikillundefined 1 Reply Last reply Reply Quote 1
                              • o_lampeundefined
                                o_lampe @o_lampe
                                last edited by

                                I've checked some papers and the conductivity of SLM printed aluminum-alloy is in the ballpark of conventional aluminum alloy material

                                Pure aluminium: 237 W/mK
                                SLM printed AlSi10Mg: 130-190 W/mK
                                Other Aluminium alloys vary from ~90-150 W/mK

                                So, if it's not the SLM-heatsink it must be poor design choices regarding airflow?

                                gloomyandyundefined 2 Replies Last reply Reply Quote -1
                                • gloomyandyundefined
                                  gloomyandy @o_lampe
                                  last edited by

                                  @o_lampe The max service operating temperature (not 100% sure what that means) for the motor is listed as only 50C so perhaps the max overall ambient temperature is related to that?

                                  1 Reply Last reply Reply Quote 0
                                  • gloomyandyundefined
                                    gloomyandy @o_lampe
                                    last edited by

                                    @o_lampe I guess the best thing to do is to ask e3d what the basis is for that 40C limit.

                                    1 Reply Last reply Reply Quote 2
                                    • Surgikillundefined
                                      Surgikill @jay_s_uk
                                      last edited by Surgikill

                                      @jay_s_uk yes, that is where I got the info. I know in the interview they said this heatssink is the most efficienct they have ever designed, going as far to say they printed pla at 40c ambient temp. I'm not sure if this is why it's rated at 40c, or if it's the plastic planetary gears.

                                      elmoretundefined 1 Reply Last reply Reply Quote 0
                                      • elmoretundefined
                                        elmoret @Surgikill
                                        last edited by

                                        Based on how E3D rates things, 40C is the “PLA without jamming” temperature

                                        Surgikillundefined 1 Reply Last reply Reply Quote 0
                                        • Surgikillundefined
                                          Surgikill @elmoret
                                          last edited by

                                          @elmoret if that's the case then it's a different story, but if the motor is only rated to 50c then I don't see it going over that, which is still pretty low.

                                          1 Reply Last reply Reply Quote 0
                                          • gnydickundefined
                                            gnydick @edsped
                                            last edited by

                                            @edsped I've found even for one tool head, I'd trade the cost for the convenience of not having to run 19 conductors for each tool.

                                            • heater: 2
                                            • thermistor: 2
                                            • fan: 3
                                            • fan: 4
                                            • stepper: 4
                                            • filament sensor/(un)load trigger button: 4
                                            1 Reply Last reply Reply Quote 0
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