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Unload All at end of Print  

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Aero3D
(@aero3d)
Active Member
Unload All at end of Print

Does anyone have suitable gcode to unload all extruders at the end of a print. Basically to perfeorm the same as choosing Unload All in the main menu before the heaters turn off. I have asked Prusa via chat but they say it would not be a good idea as you would then have to reload all filaments before the next print. Well heck, yeah, of course but liklihood you will want to do that anyway. They then came back and said it cannot be done. But I'm assuming the Unload all menu option is sinply running a gcode string.

I am fed up of a print finishing, extruders (amd bed) cooling down and by the time I get back to it more often than not one of the filaments causes a jam due to a filament bulge at the end of the filament. Seems a reasnable request, to me anyway, to have the machine automatically unload all filament while the extruder is still hot and it is then ready for filaments to be loaded for the next print.

Thanks.

Posted : 10/05/2018 2:29 pm
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: Unload All at end of Print

Yes, it can be done and very easily. But is there really a need for it?

Usually I am only changing at most 2 filaments at any time. And I very rarely use the "Unload All" option.

All you need to do is something like:

G4 S1
T0
G1 E-350 F4800
G4 S1
T1
G1 E-350 F4800
G4 S1
T2
G1 E-350 F4800
G4 S1
T3
G1 E-350 F4800

You need to pause because of a firmware fault...

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Posted : 10/05/2018 3:41 pm
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