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Prints are warping

Scheduled Pinned Locked Moved
Tuning and tweaking
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  • undefined
    infiniteloop @Norder
    last edited by 19 Jul 2022, 14:53

    @günter-jibben said in Prints are warping:

    It's too much for everyday use

    Right.

    Greetings back from the North Sea coast

    Natürlich Nordseeküste - es kann nur eine geben😁

    undefined 1 Reply Last reply 19 Jul 2022, 14:59 Reply Quote 0
    • undefined
      Norder @TRATOON
      last edited by 19 Jul 2022, 14:56

      @tratoon said in Prints are warping:

      @günter-jibben And by maco method, you refer to the Post you linked in one of your previous posts, right?

      Yes, exactly.
      Read it to decide if it's something for you.
      At least I will no longer manually adjust my print bed with a sheet of paper or a spring steel sheet.
      I only need a spring steel sheet (feeler gauge) once to determine the Z offset, and then never again... unless I change the nozzle. 😁

      Google Translate
      ----- Original Text -----

      Ja, genau.
      Lese es Dir durch um zu entscheiden ob es etwas für Dich ist.
      Ich zumindest werde mein Druckbett nicht mehr mit einem Blatt Papier oder einem Federstahlblech manuell einstellen.
      Ein Federstahlblech (Fühlerlehre) brauche ich nur einmal um den Z-Offset zu ermitteln, danach nie wieder... außer ich wechsel die Düse. 😁

      DDA5X... 0.9° Stepper... Linearrails... Duet 2 Wifi... PT100 Board... Duet IR-Probe... Dyze Pro Kit up to 500°C.. etc
      Thingiverse

      1 Reply Last reply Reply Quote 0
      • undefined
        Norder @infiniteloop
        last edited by 19 Jul 2022, 14:59

        @infiniteloop said in Prints are warping:

        @günter-jibben said in Prints are warping:

        It's too much for everyday use

        Right.

        Greetings back from the North Sea coast

        Natürlich Nordseeküste - es kann nur eine geben😁

        Hehee 👍 ... Ich wohne in Norden, und hier ist es heute brütend heiß. 😰

        DDA5X... 0.9° Stepper... Linearrails... Duet 2 Wifi... PT100 Board... Duet IR-Probe... Dyze Pro Kit up to 500°C.. etc
        Thingiverse

        undefined 1 Reply Last reply 19 Jul 2022, 15:08 Reply Quote 0
        • undefined
          Norder @TRATOON
          last edited by 19 Jul 2022, 15:02

          @tratoon said in Prints are warping:

          Just cleaned the X and Y wheels here is the result:

          15f3d5eb-2fe0-4318-9bb5-b11ebbcb97e7-image.png

          Will use G32 to level bed and then set Z offset.

          This is how you can work 👍

          DDA5X... 0.9° Stepper... Linearrails... Duet 2 Wifi... PT100 Board... Duet IR-Probe... Dyze Pro Kit up to 500°C.. etc
          Thingiverse

          undefined 1 Reply Last reply 19 Jul 2022, 15:07 Reply Quote 0
          • undefined
            TRATOON @Norder
            last edited by 19 Jul 2022, 15:07

            @günter-jibben What is the most definitive way to find the Z-Offset

            1 Reply Last reply Reply Quote 0
            • undefined
              infiniteloop @Norder
              last edited by 19 Jul 2022, 15:08

              @günter-jibben said in Prints are warping:

              Ich wohne in Norden, und hier ist es heute brütend heiß.

              Ich auch, aber unter meiner Reetmütze bleibt es schön kühl 😎

              undefined 1 Reply Last reply 19 Jul 2022, 15:33 Reply Quote 1
              • undefined
                TRATOON @infiniteloop
                last edited by 19 Jul 2022, 15:33

                @infiniteloop, @Günter-Jibben I keep getting the Z-Datum error, and I keep setting Z=0 to where a 0.04mm gauge will fit in, but it still gives me the error

                undefined 1 Reply Last reply 19 Jul 2022, 15:55 Reply Quote 0
                • undefined
                  TRATOON @TRATOON
                  last edited by 19 Jul 2022, 15:55

                  I keep setting G92 Z0, but whenever the printer finishes probing or I restart the printer, it goes back to old height

                  undefined 1 Reply Last reply 19 Jul 2022, 16:09 Reply Quote 0
                  • undefined
                    TRATOON @TRATOON
                    last edited by 19 Jul 2022, 16:09

                    @Günter-Jibben @infiniteloop Actual Z0 for me is -1.35 from where it is now. I set it as Z=0 using G92 Z0, but it keeps going back to the original position, after probing and after restarting the printer.

                    undefined 1 Reply Last reply 19 Jul 2022, 16:26 Reply Quote 0
                    • undefined
                      engikeneer @TRATOON
                      last edited by 19 Jul 2022, 16:26

                      @tratoon if you are using a probe, you shouldn't be using G92.

                      Set the z offset of your probe correctly in G31 in config.g. your z axis will be set to this value when the probe triggers

                      E3D TC with D3Mini and Toolboards.
                      Home-built CoreXY, Duet Wifi, Chimera direct drive, 2x BMG, 300x300x300 build volume
                      i3 clone with a bunch of mods

                      undefined 3 Replies Last reply 19 Jul 2022, 16:27 Reply Quote 0
                      • undefined
                        TRATOON @engikeneer
                        last edited by 19 Jul 2022, 16:27

                        @engikeneer But to get a Z offset, don't I need to tell the printer where Z0 is and isn't G92 telling the printer where Z0 is?

                        undefined 1 Reply Last reply 19 Jul 2022, 16:34 Reply Quote 0
                        • undefined
                          TRATOON @engikeneer
                          last edited by 19 Jul 2022, 16:31

                          @engikeneer So will my printer always set Z0 to where the probe is triggered, and I have to ell it (using the Z offset) where to put the nozzle in relation to the Z0, set by the probe?

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            TRATOON @engikeneer
                            last edited by 19 Jul 2022, 16:32

                            @engikeneer And how do I stop a " the height map has a substantial Z offset. Suggest use Z-probe to establish Z=0 datum, then re-probe the mesh.
                            30 points probed, min error -1.656, max error -1.329, mean -1.461, deviation 0.088
                            Height map saved to file 0:/sys/heightmap.csv" warning?

                            1 Reply Last reply Reply Quote 0
                            • undefined
                              engikeneer @TRATOON
                              last edited by 19 Jul 2022, 16:34

                              @tratoon you can use G92 once when determining the z offset, but not after.

                              My preferred approach is to set G31 Z0 (I.e. zero offset). Then probe the centre of the bed with a single G30. Then move z down until the nozzle just touches your bed. For a BLTouch, should be 1-2mm ish. Whatever that value is goes in G31 Z

                              You can then tweak it a little bit if you find your first layer is too squished, or not squished enough

                              E3D TC with D3Mini and Toolboards.
                              Home-built CoreXY, Duet Wifi, Chimera direct drive, 2x BMG, 300x300x300 build volume
                              i3 clone with a bunch of mods

                              undefined 1 Reply Last reply 19 Jul 2022, 16:47 Reply Quote 0
                              • undefined
                                TRATOON @engikeneer
                                last edited by 19 Jul 2022, 16:47

                                @engikeneer Thank you very much, that solved my problem

                                undefined 1 Reply Last reply 19 Jul 2022, 16:52 Reply Quote 1
                                • undefined
                                  engikeneer @TRATOON
                                  last edited by 19 Jul 2022, 16:52

                                  @tratoon re the warning message on the heightmap, you need to home z using your probe before creating your heightmap and before you load it. If you don't, it doesn't know where z=0 is (or thinks it's in the wrong place) so the heightmap ends up offset

                                  E3D TC with D3Mini and Toolboards.
                                  Home-built CoreXY, Duet Wifi, Chimera direct drive, 2x BMG, 300x300x300 build volume
                                  i3 clone with a bunch of mods

                                  undefined 1 Reply Last reply 19 Jul 2022, 17:41 Reply Quote 0
                                  • undefined
                                    TRATOON @engikeneer
                                    last edited by 19 Jul 2022, 17:41

                                    @engikeneer I just needed to set the Z Offset, what you are saying doesn't make sense, as the printer won't probe unless all axis are homed.

                                    undefined 1 Reply Last reply 19 Jul 2022, 17:58 Reply Quote 0
                                    • undefined
                                      engikeneer @TRATOON
                                      last edited by 19 Jul 2022, 17:58

                                      @tratoon yes thats right.

                                      However if you use a G92 Z0, or home Z with an endstop instead of the probe, it will allow you to run mesh, but you may get the error

                                      Also, now you have created a mesh, you don't have to reprobe the whole bed every print, you can just load the existing heightmap that is now saved to the SD card with G29 S1. I have a 400 point mesh for my printer that takes over an hour to run, but is stable enough that I only have to redo it if I take the printer to pieces. I just have to make sure I home z with the BLTouch before I load the heightmap for each printer.

                                      E3D TC with D3Mini and Toolboards.
                                      Home-built CoreXY, Duet Wifi, Chimera direct drive, 2x BMG, 300x300x300 build volume
                                      i3 clone with a bunch of mods

                                      undefined 1 Reply Last reply 19 Jul 2022, 19:01 Reply Quote 0
                                      • undefined
                                        TRATOON @engikeneer
                                        last edited by TRATOON 19 Jul 2022, 19:01

                                        @engikeneer , @infiniteloop, @Günter-Jibben I just started a print, and I used baby stepping to lower the nozzle during the first layer. However, when the second layer started printing, the nozzle was too low and was scraping the part, and that caused my filament sensor to pause the print as it was at 2% extrusion. Why is it that the nozzle had to be lower for the first layer but higher for all the layers after that. For the first layer, the babystep offset was -0.20, and for the layers after that, it had to be 0.04 is this normal, because I don't have this issue on my other 3D printers.

                                        undefined 1 Reply Last reply 19 Jul 2022, 19:11 Reply Quote 0
                                        • undefined
                                          infiniteloop @TRATOON
                                          last edited by 19 Jul 2022, 19:11

                                          @tratoon said in Prints are warping:

                                          For the first layer, the babystep offset was -0.20, and for the layers after that, it had to be 0.04 is this normal?

                                          Definitely not. Either the steps/mm for Z are wrong, or the nozzle pushed the bed down on the first layer. A third reason I can imagine are wrong settings in the slicer (1st layer height?).

                                          undefined 1 Reply Last reply 19 Jul 2022, 19:34 Reply Quote 0
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