Z-axis moves very slowly

Snapmaker Original
1

Hello all, after a print is completed the Z-axis lifts up the nozzle. This works since a few weeks very, very slowly. Is there a setting for this or maybe something is wrong? BR Ringellocke

2

I noticed that too, although I haven’t taken the time to figure it out.

I’ve started letting it rise a few cm, then turn the machine off. Just be careful doing that, because it doesn’t lock the Z axis until it finishes the lift. I’ve bumped the print head a few time, and it nearly fell onto my print.

Are you running the latest firmware and latest Luban? I have the 1.11 firmware, but I’m not using the latest Luban.

3

Which Slicer did you use? - If you use Luban, which version? - May you share a little gcode-file with us or just post the end gcode?

4

Hi, thank’s for you fast replys!! I’m using snapmaker original firmware version “Snapmaker-GD32Base-2.11” and slicer “Snapmaker Luban 3.3.3”.

Followed the end code:

;TIME_ELAPSED:441.535422
G1 F1500 E41.1733
M140 S0
M107
;End GCode begin
M104 S0 ;extruder heater off
M140 S0 ;heated bed heater off (if you have it)
G90 ;absolute positioning
G92 E0
G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure
G1 Z125 E-1 F35 ;move Z up a bit and retract filament even more
G1 X0 F3000 ;move X to min endstops, so the head is out of the way
G1 Y125 F3000 ;so the head is out of the way and Plate is moved forward
M84 ;steppers off
;End GCode end
M82 ;absolute extrusion mode
M104 S0
;End of Gcode

My next steps:

using the newer version Luban “3.8.0”
using default settings for high quality

Maybe it will change something?! :))

5

I am also using Luban 3.3.3. I haven’t upgraded, because my son is complaining that customized print profile changes don’t save in the latest version (completely anecdotal and untested by me). But that does make it sound like a bug that was fixed if @xchrisd doesn’t know what we’re talking about.

6

I am absolutely not sure, this behavior is since ever, right? (I remember, z was always the slowest axis)
I guessed the machine changed in some way and this could cause luban, because of the end gcode.

BTW, change the line above the following and see if it helps
‘’’
G1 E-1 F35
G1 Z125 F100
‘’’

7

Hi all,

I tried it again with the newer version of Luban “3.9.0” and the Z-axis moves normal! :blush: The end code is now:

;End GCode begin
M104 S0 ;extruder heater off
M140 S0 ;heated bed heater off (if you have it)
G90 ;absolute positioning
G92 E0
G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure
G1 Z125 E-1 F3000 ;move Z up a bit and retract filament even more
G1 X0 F3000 ;move X to min endstops, so the head is out of the way
G1 Y125 F3000 ;so the head is out of the way and Plate is moved forward
;End GCode end
M82 ;absolute extrusion mode
M104 S0
;End of Gcode

The F-value, like @xchrisd explain before, was changed from “F35” to a higher value “F3000”. This fix the problem for me. Thank you very much for helping me with this issue!

Best regards

Ringellocke