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Very stringy print  

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RGC
 RGC
(@rgc)
Active Member
Very stringy print

I've suddenly started to experience very stringy prints - the prints look like a hair net/chain link fence - please see attached images.  This is with PLA and PETG. What's causing it and how do i fix this?!!

Publié : 08/07/2023 2:20 pm
Diem
 Diem
(@diem)
Illustrious Member

Please save your project as a .3mf file

Files > Save Project as

Zip the .3mf and post it here. It will contain both your part and your settings for us to diagnose.

Cheerio,

Publié : 08/07/2023 6:51 pm
RGC
 RGC
(@rgc)
Active Member
Topic starter answered:
RE: Very stringy print

Many thanks.  Please see attached.

3mf.zip

Publié : 08/07/2023 8:24 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Very stringy print

Good evening RGC

the .3fm files you sent, seem to have the case resting with it's back surface on the build plate and the whole front face, unsupported. 
This is likely to give problems with bridging. 

Have you considered printing the in a different orientation? 

and possibly use organic supports? 

regards Joan Case body PLA JT

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Publié : 08/07/2023 9:01 pm
RGC
 RGC
(@rgc)
Active Member
Topic starter answered:
RE: Very stringy print

Thanks for the feed back.

No, I kept the same orientation because I have printed this object (it's a bluetooth speaker project case) successfully before with no problems.  Other prints of other objects with the same filaments have been fine as well.  The problem arose suddenly - a good print then the next was as shown in the images.  Could it be problem with the printer - hot end etc...

Publié : 08/07/2023 9:05 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Very stringy print

Hi, the images show what appears to be under extrusion, and the model appears to be situated on the build plate, at 90 degrees to the version in the .3mf files that you sent. 
Is the .3mf file an accurate representation of the file that you are using? 
This is what I saw in your .3mf file 
regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Publié : 08/07/2023 9:45 pm
RGC
 RGC
(@rgc)
Active Member
Topic starter answered:
RE: Very stringy print

Yes it's an accurate representation. After importing the .stl file I flip the model 90 degrees so that it is upright.

If under extrusion is the problem then how would I address it?  Blocked nozzle? or could the problem be elsewhere?

 

Publié : 08/07/2023 9:55 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Very stringy print

could be blocked nozzle, or slipping extruder hobbed gear, or friction in the filament feed are some of the possibilities

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Publié : 09/07/2023 12:14 am
RGC
 RGC
(@rgc)
Active Member
Topic starter answered:
RE: Very stringy print

I did another test print and it failed - plastic was leaking onto the heater block - see attached photo.  I have ordered replacement parts (hot end, nozzle etc) and will see wehat happens when theey are installed.

Many thanks for your help!

Publié : 10/07/2023 1:44 pm
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