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Ineal
(@ineal)
Estimable Member
Bed leveling MK4s

today i showed closer to my MK4S with MMU and i found something i am not happy with it.

i print long parts so i need print long side on X (245mm), from left to right the Z moved high, maybe 2-3mm, that is to much in my eyes.
On MK3 i got octoprint installed on a micro Raspberry direkt connected on backside of mainboard and i have a tool to messure what differents on the 9pints of screws i got. with the screw and locknut mod i have adjust this  very close.

is there a workaround to do this on the MK4S, and yes i will install this mod again if it not a part of MK4S+

Posted : 24/01/2025 5:54 pm
FoxRun3D
(@foxrun3d)
Famed Member
RE: Bed leveling MK4s

If I understand correctly, what you're saying is that the X axis seems to be higher on one side than the other? Have you redone your Z leveling (where the printer drives the X axis all the way up until the motors stall out so that both Z axes are equal). It's the first thing I would check. I haven't seen a nylock mod for the Mk4 but then again I haven't looked for it because even on my MK3S's I never had a need for it. And 3 mm seems way too much to tackle with a nylock mod as this would tell me there's a more profound mechanical misalignment somewhere, either in the way the bed is mounted, or in the X-axis. 

Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...

Posted : 24/01/2025 9:15 pm
Brian liked
Ineal
(@ineal)
Estimable Member
Topic starter answered:
RE:

IMG_8132

i think is better looking to wrote more see video. The Z movement from left to right while printing is heavy and this is no special slicing, this is the same layer.

so i will find out what the printer self is saying how much this is

This post was modified 2 weeks ago by Ineal
Posted : 24/01/2025 9:25 pm
Ineal
(@ineal)
Estimable Member
Topic starter answered:
RE:

ok i test something... i have install octoprint with plugin "prusa leveling guide"
after i found out i use a wrong USB-C cable (only power)
the plugin isn't work with MK4S. On plugin Setup i found some gcode

G28 W ; home all without mesh bed level
M400
G80; mesh bed leveling
G81 ; check mesh leveling results

gcode G81 don't work on MK4S, and yes i tested it on 6.1.20-rc1 to verify is it not only a 6.1.16 problem
ok, now i used the Terminal and let's start the Party. after G80 i got some lines that helped me.

Printer 1 - Orange: -0.68 up to 0.46  this is massiv, over 1mm, seen on Video

Recv: echo:endstops hit:  Z:0.25
Recv: echo:endstops hit:  Z:0.26
Recv: echo:endstops hit:  Z:0.26
Recv: echo:endstops hit:  Z:-0.33
Recv: echo:endstops hit:  Z:-0.27
Recv: echo:endstops hit:  Z:-0.14
Recv: echo:endstops hit:  Z:0.04
Recv: echo:endstops hit:  Z:0.20
Recv: echo:endstops hit:  Z:0.34
Recv: echo:endstops hit:  Z:0.41
Recv: echo:endstops hit:  Z:0.45
Recv: echo:endstops hit:  Z:0.32
Recv: echo:endstops hit:  Z:0.19
Recv: echo:endstops hit:  Z:0.03
Recv: echo:endstops hit:  Z:-0.12
Recv: echo:endstops hit:  Z:-0.32
Recv: echo:endstops hit:  Z:-0.28
Recv: echo:endstops hit:  Z:-0.16
Recv: echo:endstops hit:  Z:-0.01
Recv: echo:endstops hit:  Z:0.15
Recv: echo:endstops hit:  Z:0.30
Recv: echo:endstops hit:  Z:0.47
Recv: echo:endstops hit:  Z:0.46
Recv: echo:endstops hit:  Z:0.13
Recv: echo:endstops hit:  Z:-0.01
Recv: echo:endstops hit:  Z:-0.17
Recv: echo:endstops hit:  Z:-0.30
Recv: echo:endstops hit:  Z:-0.39
Recv: echo:endstops hit:  Z:-0.43
Recv: echo:endstops hit:  Z:-0.21
Recv: echo:endstops hit:  Z:-0.05
Recv: echo:endstops hit:  Z:0.10
Recv: echo:endstops hit:  Z:0.25
Recv: echo:endstops hit:  Z:0.42
Recv: echo:endstops hit:  Z:0.41
Recv: echo:endstops hit:  Z:0.24
Recv: echo:endstops hit:  Z:0.09
Recv: echo:endstops hit:  Z:-0.09
Recv: echo:endstops hit:  Z:-0.25
Recv: echo:endstops hit:  Z:-0.41
Recv: echo:endstops hit:  Z:-0.53
Recv: echo:endstops hit:  Z:-0.68
Recv: echo:endstops hit:  Z:-0.52
Recv: echo:endstops hit:  Z:-0.32
Recv: echo:endstops hit:  Z:-0.15
Recv: echo:endstops hit:  Z:0.03
Recv: echo:endstops hit:  Z:0.20
Recv: echo:endstops hit:  Z:0.35

 

Printer 2 - Blackpearl: 0.17 up to .045  only 0.28mm

Recv: echo:endstops hit:  Z:0.30
Recv: echo:endstops hit:  Z:0.29
Recv: echo:endstops hit:  Z:0.29
Recv: echo:endstops hit:  Z:0.42
Recv: echo:endstops hit:  Z:0.42
Recv: echo:endstops hit:  Z:0.38
Recv: echo:endstops hit:  Z:0.31
Recv: echo:endstops hit:  Z:0.27
Recv: echo:endstops hit:  Z:0.24
Recv: echo:endstops hit:  Z:0.17
Recv: echo:endstops hit:  Z:0.19
Recv: echo:endstops hit:  Z:0.25
Recv: echo:endstops hit:  Z:0.43
Recv: echo:endstops hit:  Z:0.45
Recv: echo:endstops hit:  Z:0.44
Recv: echo:endstops hit:  Z:0.42
Recv: echo:endstops hit:  Z:0.42
Recv: echo:endstops hit:  Z:0.38
Recv: echo:endstops hit:  Z:0.31
Recv: echo:endstops hit:  Z:0.31
Recv: echo:endstops hit:  Z:0.26
Recv: echo:endstops hit:  Z:0.21
Recv: echo:endstops hit:  Z:0.24
Recv: echo:endstops hit:  Z:0.27
Recv: echo:endstops hit:  Z:0.29
Recv: echo:endstops hit:  Z:0.33
Recv: echo:endstops hit:  Z:0.36
Recv: echo:endstops hit:  Z:0.41
Recv: echo:endstops hit:  Z:0.38
Recv: echo:endstops hit:  Z:0.35
Recv: echo:endstops hit:  Z:0.38
Recv: echo:endstops hit:  Z:0.35
Recv: echo:endstops hit:  Z:0.31
Recv: echo:endstops hit:  Z:0.30
Recv: echo:endstops hit:  Z:0.27
Recv: echo:endstops hit:  Z:0.23
Recv: echo:endstops hit:  Z:0.20
Recv: echo:endstops hit:  Z:0.29
Recv: echo:endstops hit:  Z:0.33
Recv: echo:endstops hit:  Z:0.32
Recv: echo:endstops hit:  Z:0.34
Recv: echo:endstops hit:  Z:0.35
Recv: echo:endstops hit:  Z:0.32
Recv: echo:endstops hit:  Z:0.28
Recv: echo:endstops hit:  Z:0.32
Recv: echo:endstops hit:  Z:0.32
Recv: echo:endstops hit:  Z:0.31
Recv: echo:endstops hit:  Z:0.32
Recv: echo:endstops hit:  Z:0.29
Recv: echo:endstops hit:  Z:0.23

 

so Printer 1 is BAD, 2nd can be better.

is there a Plugin that is working with Octoprint or with Prusa.Connect or Prusa.Link or somthing else to manual adjust the printing bed better?

This post was modified 1 week ago by Ineal
Posted : 28/01/2025 6:31 pm
Ineal
(@ineal)
Estimable Member
Topic starter answered:
RE: Bed leveling MK4s

i found somthing, not the best but to check ...

 

this is not looking good, 1.397 mm

 

gcode G81 don't work on MK4S, and yes i tested it on 6.1.20-rc1 to verify is it not only a 6.1.16 problemok, now i used the Terminal and let's start the Party. after G80 i got some lines that helped me.

i can't edit this anymore, i make a mistake, should be called 6.1.6 and 6.2.0

Posted : 29/01/2025 9:15 pm
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