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    Poor print quality with RRF3 - especially 3.2.2.

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    • fcwiltundefined
      fcwilt @hackinistrator
      last edited by

      @hackinistrator said in Poor print quality with RRF3 - especially 3.2.2.:

      i also didn't like the default homing files , which mark axis as homed even if i dont have a sensor attached to the board (no sensor = NO = HOMED...) . this could potentially cause damage as i'm using large high current motors .

      It can be setup either way - to stop the motors when homing is attempted or to allow them to run to the end of the axis.

      You can of course use stall detection which doesn't rely on endstop sensors.

      Frederick

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

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      • JoergS5undefined
        JoergS5 @hackinistrator
        last edited by JoergS5

        This post is deleted!
        deckingmanundefined 1 Reply Last reply Reply Quote 0
        • jens55undefined
          jens55
          last edited by

          Yeah putting another unicorn printer in close proximity might get you into a heap of trouble with piles of little unicorn printers popping up everywhere - not a pretty sight!

          (Couldn't help myself)

          JoergS5undefined 1 Reply Last reply Reply Quote 0
          • JoergS5undefined
            JoergS5 @jens55
            last edited by

            This post is deleted!
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            • dc42undefined
              dc42 administrators
              last edited by dc42

              @deckingman, please try a print using 3.3beta1. After homing and before printing, run M122 on all 4 boards to clear the stats. Then start the print. If/when it's looking bad, pause the print, run M122 on all the boards again, and post the results here. What I am particularly looking for is whether you get send timeouts on the main board and/or nonzero 'oos' counts on any of the expansion boards.

              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

              deckingmanundefined 1 Reply Last reply Reply Quote 0
              • deckingmanundefined
                deckingman @JoergS5
                last edited by

                @JoergS5 said in Poor print quality with RRF3 - especially 3.2.2.:

                @hackinistrator I second that: I hesitated to propose to check something simple, because @deckingman is such an experienced user.

                But if you look at the forum, there are often cases where, after a long search for complicated reasons, it was something simple like

                • dirty pulley or damaged belt
                • off-center pulley
                • old filament, being too wet
                • bent shaft of a stepper
                • damaged nozzle

                The easiest would be to have a clone printer and compare the results. Unfortunately it's not so easy with a unicorn printer! But somehow it's necessary to find a decision between hardware and firmware problem.

                Oh, please. A dirty pulley which magically cleans itself? (And the printer is in a dustproof booth). An off centre pulley which magically makes itself centred. The filament is a brand new reel but it's hard to imagine some metres of that reel could be wet, yet for the next print, it will be dry. A bent stepper shaft which straightens itself for one print and bends again for the next? A damaged nozzle which undamaged itself for the next print then damages itself again?

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

                JoergS5undefined 1 Reply Last reply Reply Quote 2
                • deckingmanundefined
                  deckingman @dc42
                  last edited by

                  @dc42 Thanks. Will do.

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

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                  • deckingmanundefined
                    deckingman
                    last edited by

                    One other thing that I hadn't mentioned, the printer doesn't have an RPi fitted - so this is all stand alone and anything to do with SBCs can be discounted. For what it's worth, I don't have a PanelDue either - just DWC on an aged laptop.

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

                    droftartsundefined 1 Reply Last reply Reply Quote 1
                    • JoergS5undefined
                      JoergS5 @deckingman
                      last edited by JoergS5

                      This post is deleted!
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                      • droftartsundefined
                        droftarts administrators @deckingman
                        last edited by

                        @deckingman Can you take a picture of the hot end setup at the moment? I don't think I've seen a picture of how your machine is currently configured. Might give some insight into any potential physical (rather than firmware) issues.

                        I assume you're using one of the six extruders to feed the hot end, but the others are still mounted. Another test to rule out extruder issues would be to swap to using a different extruder (if you haven't done this already).

                        Recently I had the grub screw loosen, that holds the hobbed drivegear on the motor shaft on a BMG extruder, just enough for it to wiggle a bit on the flat but not completely rotate free, and took me a while to figure out what was causing extrusion problems that are not wildly different from yours ('random' over and under extrusion, particularly at the end of lines; basically retraction wasn't doing anything, so filament oozed on moves). This was caused by swapping extruders around, as I've recently got an Orbiter v1.5, and not fully tightening the grub screw on the shaft when assembling for the 100th time. Might also explain why pressure advance stopped working for you.

                        Just to be clear, this is in no way meant to be condescending, just an observation.

                        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

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

                          @droftarts As it happens, I had considered using one of the other 5 extruders that are mounted but otherwise unused with this particular hot end. IMO, it seems to be more extrusion related than carriage motion related. Odd that the problems can appear to be present for the whole of one print and then completely absent for the whole of another print - but not beyond the realms of possibility. I'm planning on swapping to 3.3. beta as per Davids suggestion, but if I get a bad print and nothing shows up on the diagnostics, I'll try another extruder.

                          The best way to describe the current hot end arrangement is to point you to a recent video I've posted in another thread https://forum.duet3d.com/topic/21919/curious-audible-pitch-change-with-varying-move-length

                          That link will take you to a video showing it "in action" but if you want some pics, let me know.

                          Edit, 'er on doors has got car problems that I need to sort out, so I might not get much done today.

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

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

                            @deckingman Thanks, I was just watching the video!

                            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

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

                              @droftarts Curious isn't it?

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

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                              • JayJayundefined
                                JayJay @hackinistrator
                                last edited by

                                This post is deleted!
                                zaptaundefined 1 Reply Last reply Reply Quote -2
                                • zaptaundefined
                                  zapta @JayJay
                                  last edited by

                                  @JayJay said in Poor print quality with RRF3 - especially 3.2.2.:

                                  Fan boy alert....

                                  Why do you try to silence him?

                                  https://yourlogicalfallacyis.com/ad-hominem

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

                                    @deckingman
                                    I read the whole thread before I dared to ask: Don't you think it's funny, that it is always the first print that fails?
                                    How do you store the filament? Maybe it needs some more time between storage and first print? A good wine needs to breeze, too 😉

                                    Just trying to think out off the box

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                                    • deckingmanundefined
                                      deckingman @o_lampe
                                      last edited by

                                      @o_lampe said in Poor print quality with RRF3 - especially 3.2.2.:

                                      @deckingman
                                      I read the whole thread before I dared to ask: Don't you think it's funny, that it is always the first print that fails?

                                      Well, the sample size is small, so it may just be coincidental, but you aren't the first to point that out. Another coincidence is that I started another thread about my Z homing switch which sometimes erroneously gets reported as being triggered when it isn't. Cycling the power fixes it. To date, that has only ever happened first thing in the morning and never later in the day.

                                      How do you store the filament? Maybe it needs some more time between storage and first print? A good wine needs to breeze, too 😉

                                      I store the filament in sealable bags, with silica gel desiccant inside each bag (the type that changes colour when it has absorbed moisture). The bagged reels of filament then go back inside their original boxes along with a slip of paper with the date when the filament was bought. The boxes are stored on a pull out rack which sits alongside the printer, and which is inside a dust proof "booth". Also inside this booth are two disposable type de-humidifiers of the type which use Calcium Chloride.

                                      Any filament that is more than year old gets discarded (or I might use it in desperation but would be highly suspicious of any parts made with it).

                                      Details of the storage rack are here https://somei3deas.wordpress.com/2019/12/13/pull-out-filament-storage-rack/

                                      Details of the "booth" that houses the printer and rack are here https://somei3deas.wordpress.com/2019/11/27/new-home-for-my-printer/

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

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                                      • jens55undefined
                                        jens55
                                        last edited by

                                        @deckingman said in Poor print quality with RRF3 - especially 3.2.2.:

                                        Any filament that is more than year old gets discarded (or I might use it in desperation but would be highly suspicious of any parts made with it).

                                        Does that include original vacuum sealed packages that were never opened ?

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                                        • deckingmanundefined
                                          deckingman @jens55
                                          last edited by

                                          @jens55 said in Poor print quality with RRF3 - especially 3.2.2.:

                                          @deckingman said in Poor print quality with RRF3 - especially 3.2.2.:

                                          Any filament that is more than year old gets discarded (or I might use it in desperation but would be highly suspicious of any parts made with it).

                                          Does that include original vacuum sealed packages that were never opened ?

                                          No. I date them when I open them (break the seal). IMO, anything else is pointless unless they have a manufacturing date on them, which I've rarely seen. No system is perfect as one could get a reel that's been in storage for months or (even years conceivably) before one made the purchase.

                                          Even then, I've had bad reels but it tends to be kind of obvious. Since a very bad experience with the eSun PET-G, I've learned to be suspicious of the first print with a new reel - foil and vacuum packed or otherwise.

                                          I have a feeling that reel of eSun PETG fell overboard somewhere in the South China sea, was fished out after a months immersion, and only then put into a vacuum packed foil bag. I don't see how else it could have got so wet. I passed it on to a friend who spent hours and hours drying it but he never had much luck with it. Never bought any eSun filament since (although others swear by it).

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

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                                          • jens55undefined
                                            jens55
                                            last edited by

                                            Good ... you had me worried there for a bit because I have a fairly substantial stock pile. I buy a year's estimated supply at boxing day prices and have filament that is more than 2 years old but in the original sealed vacuum package.
                                            I use mostly black and white but also have some coloured filament that is sealed but is rarely used.

                                            deckingmanundefined 1 Reply Last reply Reply Quote 0
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