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TPU and stringing issue  

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roysch
(@roysch)
New Member
TPU and stringing issue

I am using:

Solutech Flexible Filament

0.6 or 0.4 mm nozzle (both get stringy)

Max Volumetric Speed 3 mm^3/s

Issue:

I can't get rid of stringing no matter what I do.

What did I try?

1. Followed the instructions here: https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/please-help-with-tpu-settings/  

This means my settings are:

Printer settings:

Retract length: 3mm 
Lift z: 0
Retract speed: 80
Detract speed: 40
Retract amount before wipe: 80% (20)

2. Filament settings: Lift Z - unchecked.

3. Baked my filament at 60C for 60 minutes (can't hear and popping sounds of boiling moisture from the nozzle - print quality of the filament is high).

I also tried reducing temp down to 190C - thinking the filament will be solid enough not to create strings.

Anyone has an idea what else could I try in order to fix this?

 

Thanks,

roysch

Posted : 20/03/2021 7:54 am
cwbullet
(@cwbullet)
Member
RE: TPU and stringing issue

TPU commonly strings especially if you print more than one object on the build plate.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 21/03/2021 8:56 pm
roysch
(@roysch)
New Member
Topic starter answered:
RE: TPU and stringing issue

In this case I print only one part. But in the past I used to print multiple parts without stringing.

Any clue anyone? - what else can I change in my settings? 

Posted : 22/03/2021 8:01 pm
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