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

    Constant layer shift along y-axis

    Scheduled Pinned Locked Moved
    Tuning and tweaking
    7
    13
    500
    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.
    • dgratundefined
      dgrat
      last edited by dgrat

      My cube is not straight. Does anyone have a clue why I may get a constant shift along y?
      It is definitely not a mechanical issue.

      IMG_20191212_231621.jpg

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

        Some details of your setup would be useful to know. See https://forum.duet3d.com/topic/5909/guide-for-posting-requests-for-help

        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

        1 Reply Last reply Reply Quote 0
        • dgratundefined
          dgrat
          last edited by

          Here is my config

          • ; Drives
          • M569 P0 S1 ; physical drive 0 goes forwards
          • M569 P1 S1 ; physical drive 1 goes forwards
          • M569 P2 S1 ; physical drive 2 goes forwards
          • M569 P3 S0 ; physical drive 3 goes forwards
          • M584 X0 Y1 Z2 E3 ; set drive mapping
          • M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
          • M92 X80.00 Y80.00 Z400.00 E180.00 ; set steps per mm
          • M566 X30.00 Y30.00 Z30.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
          • M203 X6000.00 Y6000.00 Z1200.00 E1200.00 ; set maximum speeds (mm/min)
          • M201 X500.00 Y500.00 Z50.00 E1000.00 ; set accelerations (mm/s^2)
          • M906 X1500 Y1700 Z1500 E1700 I30 ; set motor currents (mA) and motor idle factor in per cent
          • M84 S30 ; Set idle timeout
          • ; Axis Limits
          • M208 X0 Y0 Z0 S1 ; set axis minima
          • M208 X220 Y220 Z220 S0 ; set axis maxima
          • ; Endstops
          • M574 X1 Y1 Z2 S1 ; set active low and disabled endstops
          • ; Z-Probe
          • M307 H3 A-1 C-1 D-1 ; disable heater on PWM channel for BLTouch
          • M558 P9 H10 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
          • G31 P500 X0 Y0 Z3.0 ; set Z probe trigger value, offset and trigger height
          • M557 X50:220 Y10:180 S42.5 ; define mesh grid
          • ; Heaters
          • M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
          • M143 H0 S120 ; set temperature limit for heater 0 to 120C
          • M305 P1 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 1
          • M143 H1 S280 ; set temperature limit for heater 1 to 280C
          • ; Fans
          • M106 P0 S0.3 I0 F500 H-1 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
          • M106 P1 S1 I0 F500 H1 T45 ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
          • M106 P2 S1 I0 F500 H1 T45
          • ; Tools
          • M563 P0 D0 H1 F0 ; define tool 0
          • G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
          • G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

          and some photos. I use linear rails..
          IMG_20191213_205421.jpg IMG_20191213_205427.jpg IMG_20191213_205440.jpg

          1 Reply Last reply Reply Quote 0
          • botundefined
            bot
            last edited by

            How did you ensure that the Z axis was orthogonal to both X and Y when you built the machine?

            *not actually a robot

            1 Reply Last reply Reply Quote 0
            • antlestxpundefined
              antlestxp
              last edited by

              your frame or at least your axis are not square to each other. is this the first time the printer has been assembled?

              1 Reply Last reply Reply Quote 0
              • NitroFreakundefined
                NitroFreak
                last edited by

                unrelated, but your belt path is also extremely un-parallel to the frame, which will result in different steps/mm depending on position and also belt tension.

                1 Reply Last reply Reply Quote 0
                • dgratundefined
                  dgrat
                  last edited by dgrat

                  Yes it is the first time this printer is assembled in that way. Nevertheless, the belt does not need to be parallel/flat to the extrusion. I rather think that one axis might not be straight, but how this should be possible in a cartesian? Even if y would be tilted 20 degree it would only matter for the first layer.

                  1 Reply Last reply Reply Quote 0
                  • Vetiundefined
                    Veti
                    last edited by

                    @dgrat said in Constant layer shift along y-axis:

                    Nevertheless, the belt does not need to be parallel/flat to the extrusion.

                    it does create a small scaling error due to the angle of the belt.

                    1 Reply Last reply Reply Quote 0
                    • dgratundefined
                      dgrat
                      last edited by

                      Testprint of 2x2x10 cm cube. The higher the print, the less is the y offset. This is a bit weird. I try to re-check the y axis.

                      IMG_20191214_152713.jpg

                      1 Reply Last reply Reply Quote 0
                      • dgratundefined
                        dgrat
                        last edited by

                        I re-assembled the x-axis ensured it is more or less orthogonal and the error disappeared 😄

                        1 Reply Last reply Reply Quote 0
                        • dgratundefined
                          dgrat
                          last edited by dgrat

                          The issue appeared again with a 10x10x2cm cube. Y is not straight.
                          Is there a way to log step losses? Printer is square and I supect an issue with the driver?!
                          Actually, I never had a similar problem with any of my printers.

                          IMG_20191220_135107.jpg IMG_20191220_135126.jpg

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

                            Did you correct the angle of the Y belt? Perhaps it's binding?

                            Z-Bot CoreXY Build | Thingiverse Profile

                            1 Reply Last reply Reply Quote 0
                            • NitroFreakundefined
                              NitroFreak
                              last edited by

                              Loose pulley, check that the bed is mounted fixed

                              1 Reply Last reply Reply Quote 0
                              • First post
                                Last post
                              Unless otherwise noted, all forum content is licensed under CC-BY-SA