MMU2 purge block line in mid air

[mcm001]

Version

Version of Slic3r used goes here
1.41.0 Alpha 2
Use About->About Slic3r for release versions

For -dev versions, use git describe --tag or get the hash value for the version you downloaded or git rev-parse HEAD

Operating system type + version

What OS are you using, and state any version #s
Windows 10

Behavior

Load two or more objects and set them to different extruders, one taller than the other
Observe prime tower preview gcode
Find the floating line of prime in mid air made of taller part color

Is this a new feature request?
No

STL/Config (.ZIP) where problem occurs - any two stls with one taller than the other, am not permitted to upload pictured STLs.

Upload a zipped copy of an STL and your config (File -> Export Config)
Config is stock mk3 mmu config (no changes made)

[lukasmatena]

As far as I can tell, there is nothing wrong. What you see is the final unload of the filament, so the last filament does not solidify in the nozzle after the print terminates.

[bubnikv]

I agree. Before the filament is pulled out, the tip end is formed by first quickly extruding the molten material from the nozzle. That's the threads hanging in the air that you are objecting to. This kind of behavior is in Slic3r since the early Multi Material Upgrade version 1 release.

Is this explanation satisfactory? Can we close this issue?

[mcm001]

sounds reasonable to me. I was just confused when I saw extrusion in mid air. This issue can be closed.

[bubnikv]

great. Good luck with the MM.

…

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