MK3s - Ooze during leveling - GCODE or prusa slicer options to retract?
 
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MK3s - Ooze during leveling - GCODE or prusa slicer options to retract?  

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jurassic73
(@jurassic73)
Estimable Member
MK3s - Ooze during leveling - GCODE or prusa slicer options to retract?

Subject says it all... curious if there is an option in Prusa Slicer to tick a box or GCODE to add to retract the filament a bit before leveling?  Seems with PLA my extruder arrives at the purge line with a small piece that may not get stuck in the purge line and ends up in the print.  Looking to see if I can retract before leveling to avoid that ooze that ends up on the nozzle and affects my print?

Best Answer by bobstro:

A 2-step warmup will do what you want. I have a documented example here.

MK3s / My IKEA Lack enclosure

Respondido : 23/11/2020 2:39 am
jurassic73
(@jurassic73)
Estimable Member
Topic starter answered:
RE: MK3s - Ooze during leveling - GCODE or prusa slicer options to retract?

Gonna give this a go...

MK3s / My IKEA Lack enclosure

Respondido : 23/11/2020 2:44 am
bobstro
(@bobstro)
Illustrious Member
RE: MK3s - Ooze during leveling - GCODE or prusa slicer options to retract?

A 2-step warmup will do what you want. I have a documented example here.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Respondido : 23/11/2020 2:58 am
jurassic73
(@jurassic73)
Estimable Member
Topic starter answered:
RE: MK3s - Ooze during leveling - GCODE or prusa slicer options to retract?

@bobstro

Ah excellent.  Thanks for this!

Question... why is this in there twice?

M140 S[first_layer_bed_temperature] ; set target bed temp

M140 S[first_layer_bed_temperature] ; set bed final temp

 

Thanks

MK3s / My IKEA Lack enclosure

Respondido : 23/11/2020 4:39 am
bobstro
(@bobstro)
Illustrious Member
RE: MK3s - Ooze during leveling - GCODE or prusa slicer options to retract?
Posted by: @jurassic73

[...] Question... why is this in there twice?

The first is to start cooling the bed to the final desired bed temp immediately after the PINDA probe hits 35C. This way the bed will cool most of the way down towards the desired bed temp as the prime line finishes.

The second is not really required, but I wanted to have all the final temps all together for ease of reference and to save having to hunt for it. More of a stylistic choice.

M140 S[first_layer_bed_temperature] ; set target bed temp

M140 S[first_layer_bed_temperature] ; set bed final temp

 

Thanks

 

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Respondido : 23/11/2020 8:09 am
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