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    Print starts too low past home z

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    Tuning and tweaking
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    • chris5652undefined
      chris5652
      last edited by

      how do i fix when i start a print it starts lower than my z home position, i even installed newest firmware and problem still there. I even paused print rehomed z and it went to perfect position but as soon as resumme print went too low right against bed pushing down. home g28 is in the right possition

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      • dc42undefined
        dc42 administrators
        last edited by

        How are you homing Z? Do you have a Z probe, if so what type isn't?

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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        • chris5652undefined
          chris5652
          last edited by

          home with Duet Web Control home buttons on computer and panel due, and sent g28 threw web control g code area and is always in good set up position but as soon as start any print job goes down right in glass scrarapping table. And use just regular z endstop active low normally open switch

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          • dc42undefined
            dc42 administrators
            last edited by

            Is your Z endstop switch connected to the Z endstop switch input, and have you adjusted your homez.g and homeall.g files to use a Z endstop switch instead of a Z probe? See https://duet3d.com/wiki/Configuring_RepRapFirmware_for_a_Cartesian_printer#Homing_Z.

            Duet WiFi hardware designer and firmware engineer
            Please do not ask me for Duet support via PM or email, use the forum
            http://www.escher3d.com, https://miscsolutions.wordpress.com

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            • tryfarmingundefined
              tryfarming
              last edited by

              Chris, just trying to get new core xy running and had this same problem, home z perfect then when i went to print rams head into bed, found that homez.g and homeall.g had an instruction to set bed height to 2.5mm after doing home action. sorry cant give you g-code because i deleted them.

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              • chris5652undefined
                chris5652
                last edited by

                im using RepRapFirmware Configuration Tool, and had z endstop limit switch setting on top of page and not the z probe and thought that would cancel out z probe settings on bottom, but there was these default settings in switch colum:
                Trigger height at Z axis: 2.5mm
                mmTrigger height on bed: 2.5mm
                mmTrigger value: 600mm
                A switch is used to determine the distance between nozzle and bed
                i changed all settings to 0
                and now works perfect

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