3.3 RC3 Error when babystep in DWC

martin7404

I am comisioning my new 600*400 CoreXY and when I do babysteping in Z- , when I try to set it more than first layer it gives me this error

Error: G1/G2/G3: intermediate position outside machine limits

and in the Z tab I get layer equal to my babysteping

jay_s_uk

@martin7404 you M208 limit is probably z0.
You could temporarily lower this limit to -1 to allow negative babystepping below 0 to take place

o_lampe

@jay_s_uk
IMHO that's not how babystepping should work. (and how it was before)
I want a fast and immediate way to adjust Z height during the first skirt lines. Fiddling around with M208 first, is not the way to go..

Babystepping should be able to go beyond limits (again)!

fcwilt

@o_lampe said in 3.3 RC3 Error when babystep in DWC:

Babystepping should be able to go beyond limits (again)!

Given that the first layer Z height is the layer height needing more than that amount of adjustment (0.15, 0.20, etc) would seem to indicate that something is not right.

Frederick

Phaedrux

@o_lampe said in 3.3 RC3 Error when babystep in DWC:

Babystepping should be able to go beyond limits (again)!

Well it's limited to the first layer height for negative moves to try and protect the bed surface. It can happen that you hammer on the baby stepping button a few too many times because it can take a few moments to take effect, causing overshoot and a nozzle crash.

I think the principle at play is that it's better to annoy the user than infuriate them.

martin7404

@fcwilt I agree but, the printer is new custom build coreXY, with Pinda 2 probe ,large chunk Alu bed 10 mm thick 550x450 mm and heated to 110 deg for abs. The Pinda termistor reaches up to 69 deg C so during calibration runs I need more corections than 0.2 or 0.3 mm

fcwilt

@martin7404 said in 3.3 RC3 Error when babystep in DWC:

The Pinda termistor reaches up to 69 deg C so during calibration runs I need more corections than 0.2 or 0.3 mm

Have no idea what you are saying.

What is a calibration run?

Why do you need so much correction?

Frederick

martin7404

@fcwilt
I need bigger babystep because , inductive probe, big bed , new printer

o_lampe

@martin7404 said in 3.3 RC3 Error when babystep in DWC:

@fcwilt I agree but, the printer is new custom build coreXY, with Pinda 2 probe ,large chunk Alu bed 10 mm thick 550x450 mm and heated to 110 deg for abs. The Pinda termistor reaches up to 69 deg C so during calibration runs I need more corections than 0.2 or 0.3 mm

I used to use a method described in Wiki, how to find out z-probe height. It never worked out for me, so I have to run through some iterations to find the right value. That's what you call calibration run.
I have used a negative Z-limit in the past that allowed me to go lower than zero, but that messes up the whole z-homing height. I ended up writing a G92 Znn.nn at the end of my homeAll.g to deal with it.

fcwilt

@martin7404 said in 3.3 RC3 Error when babystep in DWC:

@fcwilt
I need bigger babystep because , inductive probe, big bed , new printer

I don't understand how any of that would lead to needing a larger range for babystepping.

Babystepping should only be needed at the start of a print to tweak the Z height.

What exactly are you doing when you encounter that need?

Frederick