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    pretty sure my mesh isnt working... or isnt working well.

    Scheduled Pinned Locked Moved Solved
    Tuning and tweaking
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    • joehsmashundefined
      joehsmash @Phaedrux
      last edited by

      @Phaedrux i also just realized that my values for the x and y arent even close to the min max set in the config, i made some changes just before i posted the homeall.

      i also made the changes to the probing, and its probing each spot twice now, and is probing really slowly.

      its on its last line now, ill post the height map when its finished

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      • JoergS5undefined
        JoergS5 @joehsmash
        last edited by JoergS5

        @joehsmash What you can check also, is whether the nozzle and bed heating conditions while measuring are the same as when you print, because bed heatup could warp the bed. The bed could warp downside also, lowering adhesion.

        A magnetic bed could have a negative influence on the BLTouch also. (e.g. https://forum.duet3d.com/topic/10366/another-bed-leveling-weirdness )

        joehsmashundefined 1 Reply Last reply Reply Quote 0
        • joehsmashundefined
          joehsmash @JoergS5
          last edited by

          @JoergS5 i did notice that i some times get anomalies just like that, but what i have found atleast on my machine is that it was something mechanical or something weird. but ive always sorted it out.

          mesh leveling 1.0.JPG
          here is the new mesh level, im going to take out the shims in the front portion to lower it, now that its a little more accurate.

          also it made no difference in the first layer print. more towards the front of the bed, it doesn't adhere.

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

            @joehsmash it's interesting that you have a separation horizontal line in the middle of the bed. This line is visible in the first image also. Maybe this is due to a mechanical reason?

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            • joehsmashundefined
              joehsmash
              last edited by

              nah, i manually added metal shims under the flexible metal plate. it looks worse than it is, but i have already adjusted the shims and that hump is now gone.

              i have lowered the layer height so that its actually too low and its adhering but its clearly not right yet.

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              • joehsmashundefined
                joehsmash
                last edited by

                104457770_2307323789570792_8737678779962054650_n.jpg

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

                  @joehsmash I would remove the XYZ values in M558.
                  M558 P9 C"zprobe.in" X0 Y0 Z1 H5 F120 T3000
                  =>
                  M558 P9 C"zprobe.in" H5 F120 T3000
                  They are parameters of an old firmware version (< 2).

                  joehsmashundefined 1 Reply Last reply Reply Quote 0
                  • joehsmashundefined
                    joehsmash @JoergS5
                    last edited by

                    @JoergS5 i already did that as @Phaedrux suggested

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

                      @joehsmash sorry, I've overlooked it.

                      The idea I had was that maybe your BLTouch offset is still wrong somehow, so the mesh compensation is at the wrong place.

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                      • Phaedruxundefined
                        Phaedrux Moderator
                        last edited by

                        I suspect that part of the problem may be a mismatch between the heightmap and the actual nozzle position. The heightmap is only accurate for the nozzle if the offsets are correct. So please double check your nozzle/probe x y offsets. If there is a mismatch it could be lifting when it should be dropping, etc.

                        https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe#Section_Measuring_Probe_X_Y_Offset

                        The other factors for good first layer adhesion is a very clean be, appropriate temps for bed and nozzle, and accurate flow rate. The first layer height could be perfect, but if those other things aren't right it won't stick either.

                        Z-Bot CoreXY Build | Thingiverse Profile

                        joehsmashundefined 2 Replies Last reply Reply Quote 0
                        • joehsmashundefined
                          joehsmash @Phaedrux
                          last edited by

                          @Phaedrux i just re did my spacing for my probe, and you were correct, it was out.

                          new measurements were x0 y-26

                          reprobing the bed now and am going to try a test print

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                          • joehsmashundefined
                            joehsmash @Phaedrux
                            last edited by

                            @Phaedrux better, but still not compensating on my front corner as you can see.

                            104862380_271603300755853_2977401330039354235_n.jpg

                            Here is my new config.g and my homeall.g

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                            • Phaedruxundefined
                              Phaedrux Moderator
                              last edited by

                              Your trigger height still shows as 5mm. Have you done the calibration for that too?

                              https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe#Section_Calibrate_the_Z_probe_trigger_height

                              Z-Bot CoreXY Build | Thingiverse Profile

                              joehsmashundefined 2 Replies Last reply Reply Quote 0
                              • joehsmashundefined
                                joehsmash @Phaedrux
                                last edited by

                                @Phaedrux it does, because as stated previously i would have to redesign the BL touch mount which i will once i can actually print things,

                                i didnt take into account the pin dropping so unretracted its actually around 2 mm off the bed, which is why when you look at the homeall.g i you can see why i raise the z to 10, before i probe.

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                                • joehsmashundefined
                                  joehsmash @Phaedrux
                                  last edited by

                                  @Phaedrux also, am printing a bed level test now and its absolute rubbish. worse than before lol...

                                  the front side now isnt printing at all haha

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                                  • Phaedruxundefined
                                    Phaedrux Moderator
                                    last edited by

                                    calibrating the trigger height won't require you to redesign the mount. It's a procedure to give you an accurate measurement of what your nozzle to bed distance is after probing.

                                    Have you used G30 S-1 to measure it yet?

                                    Z-Bot CoreXY Build | Thingiverse Profile

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                                    • joehsmashundefined
                                      joehsmash @Phaedrux
                                      last edited by

                                      @Phaedrux yes a G30 S-1 give me the values of 5.30 consistantly

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                                      • joehsmashundefined
                                        joehsmash @Phaedrux
                                        last edited by

                                        @Phaedrux how ever isnt the probe tip supposed to be at the same level as the nozzle?

                                        all though the BL touch probes at 5.30mm when i actually touch the nozzle to the bed or atleast touch it to a 0.13mm feeler gauge the z height is set at 0.69mm when it should be 0.13ish

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                                        • joehsmashundefined
                                          joehsmash
                                          last edited by

                                          so right now, ive used a 0.05 feeler gauge to where it JUST touches the nozzle using 0.01 movements, than i removed the feeler gauge and dropped the nozzle down another 0.05 which should be touching the bed. only it doesnt actually move the nozzle.

                                          its curious. i tried to send an M92 Z0 how it said that the command is sent how ever my z is still reporting to be a 0.44. when i send an M999 it resets like it should but it wont let me actually zero it.

                                          JoergS5undefined 1 Reply Last reply Reply Quote 0
                                          • Phaedruxundefined
                                            Phaedrux Moderator
                                            last edited by

                                            Did you use M561 to cancel any active bed compensation?

                                            https://duet3d.dozuki.com/Wiki/Gcode#Section_M561_Set_Identity_Transform

                                            Z-Bot CoreXY Build | Thingiverse Profile

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