A10M - Merlin V2 - Leveling BL Touch

[3dralf]

I'd tried ist hours but the nozzel is always to near to the bed
I found this as a discription to level BL Touch

; preheat for working temperatures
M502 ; optionally reset to firmware settings
M500; save
M851 Z0 ; reset any z-offset
G28 ; home all
G1 X117 Y117 ; move nozzle in center
M211 S0 ; disable software endstop (optionally, if not disabled via configuration.h)

; now move your nozzle manually onto the bed such that it (strongly) grips paper.
G92 Z0 ; tell the printer that this is Z = 0
G30 X117 Y117 ; move the sensor over the center and let it trigger
; note what z position G30 reports, that, negated, is your z offset

Code: Select all

SENT: G30 X117 Y117
READ: Bed X: 117.00 Y: 117.00 Z: 3.60

M851 Z-3.60 ; register that z offset
M500 ; store those values into the EEPROM
M211 S1 ; enable software endstop (optionally, if not disabled via configuration.h)

After leveling i send G28, G92 in the start gcode
It centers, it levels, but if checking with G1 Z0 it ist to near to the bed not enough space for the peace of paper i used for leveling

Where is my fail?

[ogzer707]

preheat for working temperatures
M502 ; optionally reset to firmware settings
M500; save
M851 Z0 ; reset any z-offset
M500
G28 ; home all
G1 X110 Y110 ; move nozzle in center
M211 S0 ; disable software endstop (optionally, if not disabled via configuration.h)
; now move your nozzle manually onto the bed such that it (strongly) grips paper.
G92 Z0 ; tell the printer that this is Z = 0
G30 X110 Y110 ; move the sensor over the center and let it trigger
; note what z position G30 reports, that, negated, is your z offset
M851 Z-1.23 ; register that z offset (here 1.23 as example)
M500 ; store those values into the EEPROM
M211 S1 ; enable software endstop (optionally, if not disabled via configuration.h)

[petous22]

M851 Z- is limited to 3mm in some firmwares.

[ogzer707]

My offset currently is -1.932. If yours keeps burying try a lower number offset till it doesn’t. Lower as in closer to 0
Edit: I still had my z end stop mounted in side of printer causing errors. Must remove this....thanks Vert