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    Issues with print quality, wall surface rough.

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    Tuning and tweaking
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    • Phaedruxundefined
      Phaedrux Moderator
      last edited by

      Can you try a vase mode print?

      Z-Bot CoreXY Build | Thingiverse Profile

      CorvoDewittV2undefined 2 Replies Last reply Reply Quote 0
      • CorvoDewittV2undefined
        CorvoDewittV2 @Phaedrux
        last edited by

        @Phaedrux Yep! give me 15 min.

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        • mwolterundefined
          mwolter
          last edited by

          Here's what leads me to believe the part cooling ducting can be improved. This is from his earlier video. Working on new ducts now.
          IMG_0463.png

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          • CorvoDewittV2undefined
            CorvoDewittV2 @mwolter
            last edited by

            @mwolter You are amazing thank you!!!!!!

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            • CorvoDewittV2undefined
              CorvoDewittV2 @Phaedrux
              last edited by CorvoDewittV2

              @Phaedrux Not a good look. 75% fan, 200C 30mm/s 90%flow
              1445c2c8-f483-4c5f-8026-ff6a5812369a-image.png

              Corexyundefined 1 Reply Last reply Reply Quote 0
              • Phaedruxundefined
                Phaedrux Moderator
                last edited by

                Have you done any prints larger than tiny cubes? The heat from the bed and hot nozzle can have a big effect. Try a scaling that up to a 100x100 cube with 10% infill.

                Z-Bot CoreXY Build | Thingiverse Profile

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                • CorvoDewittV2undefined
                  CorvoDewittV2 @Phaedrux
                  last edited by

                  @Phaedrux how many walls? Can I still do 20mm high?

                  Phaedruxundefined 1 Reply Last reply Reply Quote 0
                  • CorvoDewittV2undefined
                    CorvoDewittV2 @Phaedrux
                    last edited by

                    @Phaedrux Also slow still? or can I speed things back up a bit?

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                    • SAtechundefined
                      SAtech
                      last edited by

                      I have seen this before on my old and new printers. I believe what I did was calibrate the XY esteps to VERY high precision, like 0.02 mm precise. I did this with digital calipers, directly measuring the movement traveled and averaging it over 5 trials. You say you have a dial indicator, that would be very helpful. Also, improved part cooling helped as well.

                      I'm pretty sure that fixed the issue, but it was a while ago, and I could be remembering wrong.

                      CorvoDewittV2undefined 1 Reply Last reply Reply Quote 0
                      • CorvoDewittV2undefined
                        CorvoDewittV2 @SAtech
                        last edited by

                        @SAtech If the esteps are a little bit off, why cant that be compensated for with the extrusion multiplier?

                        SAtechundefined 1 Reply Last reply Reply Quote 0
                        • SAtechundefined
                          SAtech @CorvoDewittV2
                          last edited by

                          @CorvoDewittV2
                          I'm talking about the X and Y esteps, as yes, extruder esteps can be compensated with exctrusion multiplier.

                          My theory is that very slight deviations in the X and Y axes can stack up, creating slight and varying position offsets. That's just my thinking, so correct me if I'm wrong.

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                          • CorvoDewittV2undefined
                            CorvoDewittV2 @SAtech
                            last edited by

                            @SAtech I'm not sure, I have always heard that messing with xy esteps isn't a good idea, but I don't know for sure.

                            Phaedruxundefined 1 Reply Last reply Reply Quote 0
                            • mwolterundefined
                              mwolter
                              last edited by

                              Here's a quick mockup using a duct from a previous project. Obviously the mount will need to be changed to work with your hotend but would something like this work? The fan tilts outward a little, wanted to make sure this won't interfere with the frame or anything else close by.

                              Screen Shot 2020-07-08 at 6.48.43 PM.jpg

                              Screen Shot 2020-07-08 at 6.49.26 PM.jpg

                              CorvoDewittV2undefined 1 Reply Last reply Reply Quote 1
                              • CorvoDewittV2undefined
                                CorvoDewittV2 @mwolter
                                last edited by

                                @mwolter yeah that should be perfect! You can mount it however, or just make it part of the front piece. Oh I'm so excited you are awesome!

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                                • Phaedruxundefined
                                  Phaedrux Moderator @CorvoDewittV2
                                  last edited by

                                  @CorvoDewittV2 said in Issues with print quality, wall surface rough.:

                                  @SAtech I'm not sure, I have always heard that messing with xy esteps isn't a good idea, but I don't know for sure.

                                  Yeah it's generally not a good idea, especially for corexy. Use the calculated steps and then see if there is some geometric inaccuracy after everything else is tuned. If the Corexy is properly designed and well built it shouldn't be an issue. I'd be surprised if that was a problem with the ratrig kit.

                                  Z-Bot CoreXY Build | Thingiverse Profile

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                                  • Phaedruxundefined
                                    Phaedrux Moderator @CorvoDewittV2
                                    last edited by

                                    @CorvoDewittV2 said in Issues with print quality, wall surface rough.:

                                    @Phaedrux how many walls? Can I still do 20mm high?

                                    I'd do full height. Something large that's more representative of an actual object you'd print. I'd also try a vase close to the max of your height to see if the extrusion pattern stays the same.

                                    Z-Bot CoreXY Build | Thingiverse Profile

                                    CorvoDewittV2undefined 1 Reply Last reply Reply Quote 1
                                    • Corexyundefined
                                      Corexy
                                      last edited by Corexy

                                      @Phaedrux

                                      Vase mode is a good idea, I should have thought of that....I rarely print vases lol.

                                      @CorvoDewittV2

                                      Did you try those 3 steps for getting it into the ballpark?

                                      I agree that messing with the XY steps shouldn't be necessary, and really should be avoided IMHO.

                                      My extra parts for my v-core were sitting on the table when I got home. I really need to make a start now, out of excuses.

                                      @mwolter

                                      Yes those fans are too high when you look at them from that angle.

                                      That's a nice looking duct! May I enlist some of your skills when I've got my BMG/Mosquito in place on my v-core?

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                                      • Corexyundefined
                                        Corexy @CorvoDewittV2
                                        last edited by Corexy

                                        @CorvoDewittV2 said in Issues with print quality, wall surface rough.:

                                        @Phaedrux Not a good look. 75% fan, 200C 30mm/s 90%flow
                                        1445c2c8-f483-4c5f-8026-ff6a5812369a-image.png

                                        Geez that's awful.

                                        It still looks like over extrusion, but combined with a Z binding issue...you can see the regular intervals up the walls that suggest a Z screw wobble.

                                        But it's not just that, there's a slicer/config setting issue of some sort going on there.

                                        Once you've done those 3 steps, you could try just a large tall cylinder in vase mode with zero infill and single wall thickness, something like 100 diameter by the full 300 tall.

                                        That would be worth a look.

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                                        • DIY-O-Sphereundefined
                                          DIY-O-Sphere
                                          last edited by DIY-O-Sphere

                                          @CorvoDewittV2
                                          Can you please provide information for the thermistors you are using?
                                          Your config is set up for the generic ones, which is uncommon.

                                          (UTC+1)

                                          Corexyundefined 1 Reply Last reply Reply Quote 1
                                          • Corexyundefined
                                            Corexy @DIY-O-Sphere
                                            last edited by

                                            @DIY-O-Sphere said in Issues with print quality, wall surface rough.:

                                            @CorvoDewittV2
                                            Can you please provide information for the termistors you are using?
                                            Your config is set up for the generic ones, which is uncommon.

                                            There we go...

                                            That could very well explain why it looks like it's been printed at way too hot a temperature.

                                            CorvoDewittV2undefined 1 Reply Last reply Reply Quote 0
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