Bed level without z probe

4lathe

I’m having a hard time finding info on using bed leveling manually without a z probe. Do I just do g31 with T0 and then as I run g32 will it pause at each point in bed.g and let me bring the nozzle to the bed manually?

4lathe

Or do you just use mode 0 in M558 and all elsestays the same except the actual manual zeroing at each point?

fma

See https://duet3d.dozuki.com/Wiki/Using_the_manual_bed_levelling_assistant

4lathe

That requires a working z probe. I dont have one.

peter247

I just made a quick bed leveling macro .

; Bed level

G1 Z5 ; Move up 5mm
G28 XY ; Home XY
G1 Y50 X50
G28 U ; Home Z
M291 P"Bottom left" S2
G28 U ; Home Z
M291 P"Home" S2

G1 Z5 ; Move up 5mm
G1 X350 ; Move X to 400mm
G28 U ; Home Z
M291 P"Bottom Right" S2
G28 U ; Home Z
M291 P"Home" S2

G1 Z5 ; Move up 5mm
G1 Y350 ; Move Y to 350mm
G28 U ; Home Z
M291 P"Top Right" S2
G28 U ; Home Z
M291 P"Home" S2

G1 Z5 ; Move up 5mm
G1 X50 ;
G28 U ; Home Z
M291 P"Top Right" S2
G28 U ; Home Z
M291 P"Home" S2
G1 Z5 ; Move up 5mm
G1 X200 Y200 ;
G28 U ; Home Z
M291 P"Centre" S2

G28 Z ; Home Z
M291 P"Home" S2

CHANGE THE home U to home Z , Mine is dual lead screws .

fma

@4lathe said in Bed level without z probe:

That requires a working z probe. I dont have one.

Sorry! I'm pretty sure there is a document explaining what you want to do, but I can't find it...

dc42

To perform any operation that normally requires bed probing when you don't have a Z probe, use Z probe type P0 in the M558 command. Then do everything else as normal. DWC and PanelDue will prompt you to jog the nozzle down to the bed in order to do a "probe".

4lathe

Great. Thx much.