Dual Extrusion Oozing Issues

Snapmaker Artisan
1

Hi, I recently got an Artisan and while single-layer prints are going mostly ok, I am having a lot of issues with dual extrusion. Please note this is mostly with Snapmaker Orca, the models I want to print have some difficulties in Luban, however I recall having similar issues with my earlier Luban prints.

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The frames above are from a video of a test print where you can clearly see the right extruder oozing while the left prints and vice versa.

Because this test print is smaller than the width between nozzles it actually ends up OK but in most models these extra bits end up dragging over the rest of the print and causing a mess.

I have tried increasing retraction and reducing temperature which didnā€™t seem to make a difference.

Any suggestions would be welcome, thank you.

2

After posting I found this topic Snapmaker Artisan Dual Extruder Nozzle drool which seems to be essentially the same issue.

The two suggestions there are:

  1. Increase temperature rather than reduce it.

Iā€™m slightly confused as to why this helps. I am printing PLA and have the same issues at 200Ā°C and 220Ā°C. I can try going up further but I am expecting that to cause other issues.

  1. Remove the silicone covers

This is interesting because I also noted that different versions of the slicer did or did not set the unused end to cool as it alternates. I think it seems fair that it does not cool because it slows things down, is a lot of cycles, and I think the oozing would occur before it got cool enough? But perhaps others with more experience have something to share.

Thanks

3

I removed the covers on mine and have had less issue with ooze.

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4

I used 15mm toolchange retraction at 1500mm/min with ooze shield and prime tower in the past.
Edit: Added term ā€œtoolchangeā€ - retraction.

5

15mm retraction? :open_mouth:

I will give those settings a go and let you know, thanks.

6

Of course, toolchange retraction.

7

Ooh ok that makes a lot of sense - I didnā€™t realise there was a separate setting for that. I assumed that was high for a direct drive but I suppose these extruders are built for it.

Unfortunately that was already enabled but I will try playing around with it some more, thank you.

(Iā€™m assuming this is the setting labelled ā€œNozzle Switch Retraction Distanceā€ in Luban and ā€œRetraction when switching materialā€ in Orca).

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