• Tags
  • Documentation
  • Order
  • Register
  • Login
Duet3D Logo Duet3D
  • Tags
  • Documentation
  • Order
  • Register
  • Login

Having problems with Anycubic Kossel Linear Plus calibration

Scheduled Pinned Locked Moved
Tuning and tweaking
calibration
6
85
7.5k
Loading More Posts
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • undefined
    SnakeSP @infiniteloop
    last edited by 2 Oct 2019, 01:47

    @infiniteloop
    I have included G29 S1 into starting script in slicer, so the bed mesh is loaded (checked with M122).
    The bed is deformed indeed, but not that much (+/- 0,16 should be compensated without major problems with bed mesh, i assume).
    Probing speed is F120, should not be too fast.

    undefined 1 Reply Last reply 2 Oct 2019, 02:14 Reply Quote 0
    • undefined
      infiniteloop @SnakeSP
      last edited by 2 Oct 2019, 02:14

      @SnakeSP

      Probing speed is F120, should not be too fast.

      Indeed, that’s rather slow.

      +/- 0,16 should be compensated without major problems with bed mesh

      That depends. The distance between probing points may ignore some details. I don’t know what your current hight map looks like, but according to your latest test prints, it might be interesting to have a closer look at the two areas where the filament delaminates.

      For that, you can define a special grid to probe, just one area at a time, with a very narrow grid spacing. The resulting hight map is like a look through a magnifying glass.

      Of course this will not cure your problem, in the best case, you only get a better understanding of what happens.

      An alternative explanation for the observed delaminations might be a damaged surface, damaged in the sense that the coating in these areas does no longer stick well with the filament.

      undefined 1 Reply Last reply 2 Oct 2019, 02:22 Reply Quote 0
      • undefined
        SnakeSP @infiniteloop
        last edited by 2 Oct 2019, 02:22

        @infiniteloop
        The mesh is dense (305 points).
        As for the delamination reasons - looks like the nozzle is a bit too low at that points. Babystepping +0.05 solved this, but this again is not permanent solution...

        undefined 1 Reply Last reply 2 Oct 2019, 02:36 Reply Quote 0
        • undefined
          infiniteloop @SnakeSP
          last edited by 2 Oct 2019, 02:36

          @SnakeSP

          The mesh is dense

          Too lazy to do the math, but the resolution is at approx. 10 mm - not enough for a close look. But talking about babystepping: Do I understand you right that this is only true for prints in these two areas, or does this work for the whole print bed?

          undefined 1 Reply Last reply 2 Oct 2019, 18:34 Reply Quote 0
          • undefined
            SnakeSP @infiniteloop
            last edited by 2 Oct 2019, 18:34

            @infiniteloop
            Babystepping +0.05 works for the whole print. At least it did not make the other parts being printed worse.

            undefined 1 Reply Last reply 2 Oct 2019, 20:46 Reply Quote 0
            • undefined
              infiniteloop @SnakeSP
              last edited by 2 Oct 2019, 20:46

              @SnakeSP

              Babystepping +0.05 works for the whole print.

              Then, you simply subtract 0.05 (mm) from your Z probe height - which is exactly the same as to set the babystepping to +0.05. It might be worth trying some even finer adjustment by subtracting one or two more hundredths. Good luck!

              undefined 2 Replies Last reply 2 Oct 2019, 21:04 Reply Quote 0
              • undefined
                SnakeSP @infiniteloop
                last edited by 2 Oct 2019, 21:04

                @infiniteloop
                Did that before and after autocalibration with new Z probe height (correct direction - subtracted 0.05, double-checked that) and creating new bed mesh ended with printing mid air... Which is strange.

                undefined 1 Reply Last reply 2 Oct 2019, 22:36 Reply Quote 0
                • undefined
                  SnakeSP @infiniteloop
                  last edited by 2 Oct 2019, 21:54

                  @infiniteloop
                  Did just as you've suggested (Z probe height - 0.05) and surprisingly it did work (i have not changed heightmap.csv this time).
                  Print comes out with almost acceptable quality:
                  photo1
                  The only thing that bothers me is that defects at the start of each print:
                  photo2 photo3 photo4
                  it happens after retraction and moving to new coordinates, so i suspect this is due to incorrect retract settings in slicer.
                  For now i use (bowden tube 640 mm with ID 2 mm):
                  Retraction distance = 8.0 mm
                  Extra restart distance = 0.4 mm
                  Retraction vertical lift = 1 mm
                  Retraction speed = 100 mm/s
                  Coasting distance = 0,25 mm (was not able to make Pressure Advance work yet).
                  Z vertical speed = 40 mm/s, movement speed = 200 mm/s

                  undefined 1 Reply Last reply 2 Oct 2019, 22:37 Reply Quote 0
                  • undefined
                    infiniteloop @SnakeSP
                    last edited by 2 Oct 2019, 22:36

                    @SnakeSP Ah, spaghetti printing! Maybe you should switch to some eatable filament?

                    undefined 1 Reply Last reply 2 Oct 2019, 22:37 Reply Quote 0
                    • undefined
                      infiniteloop @SnakeSP
                      last edited by 2 Oct 2019, 22:37

                      @SnakeSP

                      Print comes out with almost acceptable quality

                      First things first: Congrats! One problem solved. What happens when you create a new height map remains to be seen, that’s the next step.

                      Your photos look familiar to me, I’m in the middle of the same fight with my own printer (just a mean cartesian, bowden setup). So, I can’t provide a solution yet, only two observations:

                      Print results became better when I reduced the retraction distance (currently at 6 mm).
                      Your retraction speed looks way too high - I don’t dare to go beyond 30 mm/s.

                      And yes, pressure advance is a hot topic in the forum, I just try to learn about that from the wise guys over here…

                      undefined 1 Reply Last reply 2 Oct 2019, 22:40 Reply Quote 0
                      • undefined
                        SnakeSP @infiniteloop
                        last edited by 2 Oct 2019, 22:37

                        @infiniteloop 🙂

                        undefined 1 Reply Last reply 2 Oct 2019, 22:38 Reply Quote 0
                        • undefined
                          infiniteloop @SnakeSP
                          last edited by 2 Oct 2019, 22:38

                          @SnakeSP Sorry for that…

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            SnakeSP @infiniteloop
                            last edited by 2 Oct 2019, 22:40

                            @infiniteloop
                            As for retraction speed - i tried low speeds (30-40 mm/s) and got way too much stringing. But will try to lower down for experiments.
                            Distance - yes, looks too much, will lower it.

                            undefined 1 Reply Last reply 2 Oct 2019, 22:50 Reply Quote 0
                            • undefined
                              infiniteloop @SnakeSP
                              last edited by 2 Oct 2019, 22:50

                              @SnakeSP

                              …got way too much stringing

                              With PETG, in my case it helped to lower the hot end temperature a bit (-5 deg.).

                              undefined 1 Reply Last reply 2 Oct 2019, 22:53 Reply Quote 0
                              • undefined
                                SnakeSP @infiniteloop
                                last edited by 2 Oct 2019, 22:53

                                @infiniteloop Yes, lower temperature reduces stringing, but i'm already at 240 С for the first layer and 220 C for all higher layers. 220 C is the lowest temperature recommended by my filament manufacturer.
                                So looks the only 3 parameters i can play to reduce stringing are Retraction length, retraction speed and coast at end.

                                undefined 1 Reply Last reply 2 Oct 2019, 23:15 Reply Quote 0
                                • undefined
                                  infiniteloop @SnakeSP
                                  last edited by 2 Oct 2019, 23:15

                                  @SnakeSP

                                  220 C is the lowest temperature recommended by my filament manufacturer.

                                  My PETG is rated at 210-220 C. Worked for my Aero clone the printer came with, but when I mounted an original E3D water-cooled design, I had to go with 235-240 C instead. Everything is relative…

                                  1 Reply Last reply Reply Quote 0
                                  • undefined
                                    Veti
                                    last edited by 3 Oct 2019, 07:56

                                    @SnakeSP said in Having problems with Anycubic Kossel Linear Plus calibration:

                                    For now i use (bowden tube 640 mm with ID 2 mm):
                                    Retraction distance = 8.0 mm

                                    you might want to build flying extruder.

                                    undefined 1 Reply Last reply 4 Oct 2019, 00:59 Reply Quote 0
                                    • undefined
                                      SnakeSP @Veti
                                      last edited by 4 Oct 2019, 00:59

                                      @Veti That's interesting, but not in nearest future as it is rather complicated.

                                      1 Reply Last reply Reply Quote 0
                                      • undefined
                                        Danal
                                        last edited by 4 Oct 2019, 14:36

                                        I have a printer with about 1.1meter bowden. I run 4 to 5 mm retract at 40.

                                        Delta / Kossel printer fanatic

                                        undefined 1 Reply Last reply 4 Oct 2019, 21:55 Reply Quote 0
                                        • undefined
                                          SnakeSP @Danal
                                          last edited by 4 Oct 2019, 21:55

                                          @Danal On what plastic? I use PETG now and it is very prone to stringing. What extruder are you using? I'm on stock Anycubic one, which is not very accurate. Extruder modification is next thing to upgrade in my list after making magnetic arms.

                                          undefined 1 Reply Last reply 5 Oct 2019, 06:06 Reply Quote 0
                                          73 out of 85
                                          • First post
                                            73/85
                                            Last post
                                          Unless otherwise noted, all forum content is licensed under CC-BY-SA