Hello
duet has a scanning Z probe on offer, my question about the product is, can you use it as a "Z-endstop"? otherwise there would be 2 probes on the print head. one for bed mesh and one as an end stop.

Thanks for the answers, meanwhile the highest value is 0.3mm, I drove off the top of the top plate

with a dial gauge, the Y rail is at 1-2/100. the bed is warped from the middle of 3/10.

Thanks Markus

@deckingman hence the question of whether the bed is crooked or something else, the Y rail (CBC) is mounted on aluminum, according to the height map the aluminum should be warped. if it's not the bed.

this machine is a tool changer with a 3 belt drive, the bed is 6 mm finely milled cast aluminum plate, I cannot check whether this is straight. but I think so.

to test I put a glass plate on the bed which is on 2 parallel pegs and the result is the same

that's on the borosilicate board

@Phaedrux
Does the order of the pivot points listed in M671 match the order of the motors listed in M584?
Yes
What results are displayed on a G32? Does it get better or worse if you do it more than once?
the result is always accurate
G32
Leadscrew adjustments made: 0.261 -0.106 0.064, points used 3, (mean, deviation) before (0.090, 0.112) after (0.000, 0.000)

after
Leadscrew adjustments made: -0.020 0.035 0.036, points used 3, (mean, deviation) before (0.016, 0.017) after (0.000, 0.000)

If the order doesn't match, you can actually add a twist to the bed instead of correcting it.
how does it work?

I use three Z axes for the automatic bed alignment on my printer.
but the height map shows something strange.
I've attached the config and bed

config.g bed.g

@Phaedrux said in SBC Problem:

You should remove the multiple values for the Z axis in all of these commands. It is set per axis. The only time multiple values are required is for extruders as they are independent axis.

Great problem solved

@Phaedrux said in SBC Problem:

At what point are you seeing this speed?

when homing above at "requested speed"
and of course the bed that moves in slow motion. Z also moves at 0.5mm/s when moving

the error message is gone, only the speed of the Z axis is at 0.5mm/s is that due to the beta status?

@dc42 said in SBC Problem:

@Macwolf I'm not certain this is the problem, however M92 takes only a single Z parameter even if you have multiple Z drivers.

what do you mean by a parameter? a small example?

M92 Z640 ; only ?