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    waste / nozzle priming bucket - material for lip?

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    • bret4undefined
      bret4
      last edited by

      I just print two outlines around the part to prime and make sure level looks good for every print. The brush idea could be useful for petg and tpu because I find they make a mess of the nozzle. A brass brush with some kind of servo to move it out of the way when not cleaning would be what I may do one day.

      briskspiritundefined 1 Reply Last reply Reply Quote 0
      • briskspiritundefined
        briskspirit @bret4
        last edited by

        @bret4 Yeah, I love PETG and hate the mess around nozzle 🙂 That's why thought about brush

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        • sonderzugundefined
          sonderzug
          last edited by

          Hi,

          something that Stratasys FDM printers do which works very well is the combination of a fine brass brush and rather stiff (orange) silicone lip. These come as a set in one piece with each set of nozzles and thus can be swapped after some 100 machine hours. They are clipped into the frame to align with the waste bucket. The nozzle is brushed off first in a swift back-and-forth Motion, then wiped off with the lip.

          I would opt for rather hard material for your silicone lip. I don't see the material from e3d's socks lasting very long in this application…

          best regards, Niklas

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          • vwegertundefined
            vwegert
            last edited by

            @bret4 I do print a brim as well. With my old (non-Duet) Cartesian printer, any ooze that occurred was simply dropped off the edge of the print bed because the nozzle home position was to the left and front of the print surface. With my new Duet-driven Delta, the home position is right above the print bed of course, so all the "droppings" from heating the nozzle or changing the filament land on the print bed and - with my usual bad luck - end up in the printed piece.
            So far, I haven't tried anything but PLA yet, but once the enclosure is completed, I will try other stuff as well. I should have enough

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            • vwegertundefined
              vwegert @briskspirit
              last edited by

              @briskspirit Do you know how the E3D silicone "sock" would handle being dragged across a metal brush? I don't - I could image it might be damaged or even pulled off partially or completely...

              briskspiritundefined 1 Reply Last reply Reply Quote 0
              • briskspiritundefined
                briskspirit @vwegert
                last edited by

                @vwegert I cut that sock to free whole nozzle as it got ripped after 3-4 prints ...

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                • mrehorstdmdundefined
                  mrehorstdmd
                  last edited by

                  I have a Cubex Duo that came with a waste bucket. It had a spring loaded teflon strip that the nozzle would scrape against to knock the drool off the extruder. The teflon strip worked fine even at ABS print temperatures because it was only in contact with the nozzle for a fraction of a second as the nozzle passed over it.

                  https://drmrehorst.blogspot.com/

                  briskspiritundefined 1 Reply Last reply Reply Quote 0
                  • briskspiritundefined
                    briskspirit @mrehorstdmd
                    last edited by

                    @mrehorstdmd good idea!

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                    • chandersundefined
                      chanders
                      last edited by

                      I have seen some printers use soda cans that were cut into strips as a wipe area.

                      vwegertundefined 1 Reply Last reply Reply Quote 0
                      • vwegertundefined
                        vwegert @chanders
                        last edited by

                        @chanders Hmmmm... Makes me want to check whether I could fit the lower half of a soda can into my printer...

                        1 Reply Last reply Reply Quote 1
                        • deckingmanundefined
                          deckingman @vwegert
                          last edited by

                          @vwegert This is exactly what I do. I use a strip of silicon rubber which is pressed into a slot in a long "bucket". My purge commands consist of extruding some filament then wiping the nozzle back and forth across this strip. I'm 10,000 miles away from home at the moment and only have my phone with me so it's not easy to post a link. However, take a look at my blog which is linked in my signature. There is a detailed post describing how I print with a purge bucket. HTH

                          Ian
                          https://somei3deas.wordpress.com/
                          https://www.youtube.com/@deckingman

                          vwegertundefined 1 Reply Last reply Reply Quote 0
                          • vwegertundefined
                            vwegert @deckingman
                            last edited by

                            @deckingman This looks like what I had in mind originally. Do you happen to remember what kind of silicone strip you used?

                            deckingmanundefined 1 Reply Last reply Reply Quote 0
                            • deckingmanundefined
                              deckingman @vwegert
                              last edited by

                              @vwegert Not off hand. I think I just did a "Google search" for silicon rubber strip or some such term.

                              Ian
                              https://somei3deas.wordpress.com/
                              https://www.youtube.com/@deckingman

                              mrehorstdmdundefined 1 Reply Last reply Reply Quote 0
                              • mrehorstdmdundefined
                                mrehorstdmd @deckingman
                                last edited by

                                @deckingman You could probably get a silicone strip from a squeegee...

                                https://drmrehorst.blogspot.com/

                                deckingmanundefined 1 Reply Last reply Reply Quote 0
                                • tech-ratonundefined
                                  tech-raton
                                  last edited by

                                  I used a bit of silicone sock from e3d. It worked nice...
                                  Silicon and heat resistance...

                                  1 Reply Last reply Reply Quote 0
                                  • deckingmanundefined
                                    deckingman @mrehorstdmd
                                    last edited by

                                    @mrehorstdmd said in waste / nozzle priming bucket - material for lip?:

                                    @deckingman You could probably get a silicone strip from a squeegee...

                                    Yes that would have worked too. I found some strip about 20mm X 3mm but IIRC had to buy a I metre length.

                                    Ian
                                    https://somei3deas.wordpress.com/
                                    https://www.youtube.com/@deckingman

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                                    • jckrayundefined
                                      jckray
                                      last edited by

                                      I found that the wire bush destroyed a brass nozzle pretty quickly. I ended up using a silicone strip as others have mentioned. I get the silicon from McMaster-Carr and then cut it to size.

                                      https://www.mcmaster.com/3635k11

                                      John
                                      Founder of Hydra Research LLC, developers of the open-source 3D printers and providers of 3D printing services.
                                      https://www.hydraresearch3d.com/

                                      1 Reply Last reply Reply Quote 0
                                      • mrehorstdmdundefined
                                        mrehorstdmd
                                        last edited by

                                        There's a lot of small, cheap, kitchen junk that's made of silicone.

                                        https://drmrehorst.blogspot.com/

                                        vwegertundefined 1 Reply Last reply Reply Quote 0
                                        • vwegertundefined
                                          vwegert @mrehorstdmd
                                          last edited by

                                          @mrehorstdmd I've actually ordered one of these cheap-o baking mats made of heat-resistant silicone - cheap enough to try and cut it to strips...

                                          deckingmanundefined 1 Reply Last reply Reply Quote 0
                                          • deckingmanundefined
                                            deckingman @vwegert
                                            last edited by

                                            @vwegert I kind or forgot but I actually made a video of my purge bucket in action. If it's any use, check it out here https://www.youtube.com/watch?v=zNNmZCXErYY&lc=z234cfh4dkylhh4ra04t1aokgl1ownrihxxz0fiwil5xrk0h00410

                                            Ian
                                            https://somei3deas.wordpress.com/
                                            https://www.youtube.com/@deckingman

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