MM Print: Sensless Extrusion after Tool/Color Change
 
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Martin
(@martin-16)
Eminent Member
MM Print: Sensless Extrusion after Tool/Color Change

Hi there

I'm still experimeting with mutli material printing on my Mini and I have a new problem. I'm not sure, if this behaviour  has been change in the actual PrusaSlicer. I'm currently running 2.5.0

The Problem

After the filament change (which i have added manually into the "Tool Change G-Code" section) the print head is returing to the wipe tower at the position it's left off before the filament change. So far so good... BUT: Before it just print a few lines on the wipe tower, it extrudes some filament (E18 !) while don't move the other axis. This is causing a blob where the head crashes in afterward or get stuck. 

I don't see any reason why PS is extruding this extra filament while stay on place at this point. Does anybody know which setting may cause this? 

Thanks

martin

Blob on wipe tower

 

Opublikowany : 11/02/2023 3:31 pm
Mike_GKA
(@mike_gka)
Active Member
RE: MM Print: Sensless Extrusion after Tool/Color Change

I have the same issue and must turn off "wipe tower", with some other issues.

Opublikowany : 24/02/2023 5:34 pm
Diem
 Diem
(@diem)
Illustrious Member

If you are changing filament manually a wipe tower is not needed.

See these threads:

https://forum.prusa3d.com/forum/prusaslicer/manual-multicolor/

https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/acting-as-my-own-mmu

Cheerio,

Opublikowany : 24/02/2023 8:23 pm
Martin
(@martin-16)
Eminent Member
Topic starter answered:
RE: MM Print: Sensless Extrusion after Tool/Color Change

 

Posted by: @diem

If you are changing filament manually a wipe tower is not needed.

See these threads:

https://forum.prusa3d.com/forum/prusaslicer/manual-multicolor/

https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/acting-as-my-own-mmu

Cheerio,

Yes, i know. It works whitout more or less but it's better for consistent flow, especially when change to a different material and the temp changes. Doring the move of the printhead from the parking position, sometimes some filament is oozed.  But thanks anyway Diem, i will print without heat tower then.

Opublikowany : 24/02/2023 8:51 pm
Diem
 Diem
(@diem)
Illustrious Member

sometimes some filament is oozed

In the first thread linked above, the third post, from @joantabb, explains how to deal with that.

Cheerio,

Opublikowany : 24/02/2023 9:54 pm
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