<p>The bed adhesion is going from already mediocre to unusable. So I got my glass plate. With my previous printer I really liked printing PLA on a 60 °C alcohol-cleaned bed.</p>
<p>The problem that I am having, is that the auto-leveling procedure fails. The bed sensors are detected 3 mm (glass height) sooner than it anticipates.</p>
<p>Customer support told me that I can alter this in the slicer settings. &quot;It can be done in CURA or whatever slicer I am using&quot;.</p>
<p>I am using that Wiibuilder program that was supplied with the printer on the SD card. I may or may not have searched hard enough, but I haven't found it.  I did find this</p>
<p><a href="https://i.sstatic.net/fGS3T.png" rel="nofollow noreferrer" title="Screenshot of Wiibuilder's Warping Precaution settings"><img src="https://i.sstatic.net/fGS3T.png" alt="Screenshot of Wiibuilder's Warping Precaution settings" title="Screenshot of Wiibuilder's Warping Precaution settings" /></a></p>
<p>Only it does not do anything. The auto-leveling still fails.</p>
<p>Customer support also told me I can just alter the G-code. They neglect to mention how to do so.</p>
<p>This seems to be the starting part.</p>
<pre><code>M73 P0
;MINX:-9.0
;MAXX:12.0
;MINY:-26.0
;MAXY:25.0
;MINZ:0.0
;MAXZ:26.3
;MachineType:MP Mini Delta V2
;FilamentType:PLA
;Extruder0Temperature:200
;BedTemperature:55
;InfillDensity:10
;FLAVOR:Marlin
;TIME:1372
;FilamentUsed:1557.2
;Layer height: 0.35

;Generated with Cura_SteamEngine 3.1
M140 S55
M104 T0 S215
M82 ; absolute extrusion mode
;(**** start.gcode for MP Mini Delta****)
G21
G90
M82
M107
M104 S170
G28 X0 Y0
G28 Z0
G29 Z0.4
G1 Z15 F300
M109 S215.0
G92 E0
G1 F200 E3
G92 E0
G1 F2000
</code></pre>
<p>Can somebody tell me what I must alter or add here to let the printer auto-level with the 3 mm glass bed?</p>
<p>I tried setting <code>G29</code> on  <code>3.4</code> no effect.
I tried setting <code>G29</code> on <code>-2.6</code> no effect.</p>

CC BY-SA 4.0
2023-04-10T19:33:30.217Z
What do you mean by "I tried setting G29 on 3.4 no effect. I tried setting G29 on -2.6 no effect."? How do you exactly do it? Have you modified Z-offset value in your printer or in Cura? What is your Z-offset value from printer's screen?
kosteklvp
CC BY-SA 4.0
2023-04-10T20:14:55.963Z
What I mean is that I tried to manually edit the G-code line containing G29
bask185
CC BY-SA 4.0
2023-04-10T21:12:30.470Z
Note that `G28 Z0` is not valid, `G28 Z` is so is `G28 X0 Y0`, the letters are flags, the number is ignored. Unless your firmware is MachineKit, `G29 Z0.4` doesn't do anything.
0scar
CC BY-SA 4.0
2023-04-11T06:10:04.507Z
What happens when you add `M851 Z-2.6` to your G-code? It should set Z-offset value to `-2.6`.
kosteklvp
CC BY-SA 4.0
2023-04-11T13:41:21.997Z
I will try that tonight after work. I'll get back to you
bask185
CC BY-SA 4.0
2023-04-11T13:43:25.307Z
@0scar If it does not do anything than why would my slicer put it there?
bask185
CC BY-SA 4.0
2023-04-11T21:01:22.227Z
Because it is in the start G-code, that has been put there by someone, not by Cura. Presumably by some config?
0scar
CC BY-SA 4.0
2023-04-12T18:57:27.537Z
@kosteklvp I tried M851 Z-2.6, no effect. I am going to mail customer support again.
bask185
CC BY-SA 4.0
2023-04-12T19:12:39.880Z
Also that Z-axis offset you can fill in in Wiibuilder results in this line `G92 Z3.27`.. it unfortunately does not help though
bask185
<g-code><monoprice-mini-delta><automatic-bed-leveling>
Monoprice MP Mini Delta adding glass bed
bask185
# Monoprice MP Mini Delta adding glass bed

(Asked by: username_0 on 2023-04-10)

The bed adhesion is going from already mediocre to unusable. So I got my glass plate. With my previous printer I really liked printing PLA on a 60 °C alcohol-cleaned bed.
The problem that I am having, is that the auto-leveling procedure fails. The bed sensors are detected 3 mm (glass height) sooner than it anticipates.
Customer support told me that I can alter this in the slicer settings. "It can be done in CURA or whatever slicer I am using".
I am using that Wiibuilder program that was supplied with the printer on the SD card. I may or may not have searched hard enough, but I haven't found it.  I did find this

Only it does not do anything. The auto-leveling still fails.
Customer support also told me I can just alter the G-code. They neglect to mention how to do so.
This seems to be the starting part.
M73 P0
;MINX:-9.0
;MAXX:12.0
;MINY:-26.0
;MAXY:25.0
;MINZ:0.0
;MAXZ:26.3
;MachineType:MP Mini Delta V2
;FilamentType:PLA
;Extruder0Temperature:200
;BedTemperature:55
;InfillDensity:10
;FLAVOR:Marlin
;TIME:1372
;FilamentUsed:1557.2
;Layer height: 0.35

;Generated with Cura_SteamEngine 3.1
M140 S55
M104 T0 S215
M82 ; absolute extrusion mode
;(**** start.gcode for MP Mini Delta****)
G21
G90
M82
M107
M104 S170
G28 X0 Y0
G28 Z0
G29 Z0.4
G1 Z15 F300
M109 S215.0
G92 E0
G1 F200 E3
G92 E0
G1 F2000

Can somebody tell me what I must alter or add here to let the printer auto-level with the 3 mm glass bed?
I tried setting G29 on  3.4 no effect.
I tried setting G29 on -2.6 no effect.

**Tags:** g-code, monoprice-mini-delta, automatic-bed-leveling
> **Comments:**
> **username_1**: What do you mean by "I tried setting G29 on 3.4 no effect. I tried setting G29 on -2.6 no effect."? How do you exactly do it? Have you modified Z-offset value in your printer or in Cura? What is your Z-offset value from printer's screen?  
> **username_0**: What I mean is that I tried to manually edit the G-code line containing G29  
> **username_2**: Note that `G28 Z0` is not valid, `G28 Z` is so is `G28 X0 Y0`, the letters are flags, the number is ignored. Unless your firmware is MachineKit, `G29 Z0.4` doesn't do anything.  
> **username_1**: What happens when you add `M851 Z-2.6` to your G-code? It should set Z-offset value to `-2.6`.  
> **username_0**: I will try that tonight after work. I'll get back to you  
> **username_0**: @0scar If it does not do anything than why would my slicer put it there?  
> **username_2**: Because it is in the start G-code, that has been put there by someone, not by Cura. Presumably by some config?  
> **username_0**: @kosteklvp I tried M851 Z-2.6, no effect. I am going to mail customer support again.  
> **username_0**: Also that Z-axis offset you can fill in in Wiibuilder results in this line `G92 Z3.27`.. it unfortunately does not help though  

---

## 0 answers

