Nozzle move too late at the end of print

Auré

Ok I try, I got to print a test.

G91 ;Relative positioning
G1 Z1 F2400 ;Raise Z
M106 S0
G90
G1 X355 Y340 F3000 ;Wipe out
M117 Fin d'impression

dc42

@auré in your end GCode script you need to add M83 before the G1 E-5 line. This s because Cura sets the extrusion mode to absolute prior to running any user-provided scripts. This is totally stupid, but it's what the Cura devs implemented. What's probably happening is that the G1 E-5 line is retracting a lot of filament instead of 1mm, and that's what takes the time.

Auré

@dc42 said in Nozzle move too late at the end of print:

in your end GCode script you need to add M83 before the G1 E-5 line. This s because Cura sets the extrusion mode to absolute prior to running any user-provided scripts. This is totally stupid, but it's what the Cura devs implemented. What's probably happening is that the G1 E-5 line is retracting a lot of filament instead of 1mm, and that's what takes the time.

Thank you very much, as soon as I have solved my filament blockage in my extruder I will do some tests.

Auré

Well, it seems okay with this:

G91 ;Relative positioning
M83
G1 E-1 F2700 ;Retract a bit
G1 E-1 Z1 F2400 ;Retract and raise Z
M106 S0
G90
G1 X355 Y340 F3000 ;Wipe out
M117 Fin d'impression

Thank you very much both

Phaedrux

@dc42 said in Nozzle move too late at the end of print:

This s because Cura sets the extrusion mode to absolute prior to running any user-provided scripts. This is totally stupid, but it's what the Cura devs implemented.

You can still set Cura to use relative extrusion. It's an option under special moves section I believe and may be hidden by default.

dc42

@phaedrux unless they changed it recently, even when you set relative extrusion, Cura emits a M82 command prior to any user-specified GCode scripts.

Phaedrux

@dc42 I think it's just once at the start of the file. And if you've enabled relative extrusion the M83 will follow shortly after. As far as I know it doesn't switch back after that.

dc42

@phaedrux this is latest Cura:

Phaedrux

@dc42 Yes you're right, it does insert a M82. I think I've never noticed an issue with that because I use firmware retraction, so my ending script just performs a simple retraction with G10 rather than a G1 E move.

Is that tooltip comment about slight deviations in the amount of deposited material actually accurate any longer?

Auré

Hi

Thank you for your research!