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Harakiri
(@harakiri)
Active Member
Cracks in Layers

hi guys,

i get those strange cracks in the surface every now and then. The filament is dried in the oven to make sure it‘s dry.

I should add that those cracks are More or less reproducable, so they appear basically at the same location. It’s not the seam (seam is in the back of the Print)

 

This topic was modified 4 years ago by Harakiri
Posted : 08/03/2021 11:31 am
Clarmrrsn
(@clarmrrsn)
Honorable Member
RE: Cracks in Layers

What does the first layer look like?

I would suspect the extruder, there is a section in this document on extruder maintenance/adjustment.

Prusa Knowledge Base | i3 Printers Regular Maintenance (prusa3d.com)

This post was modified 4 years ago by Clarmrrsn

Tank you very much!

Posted : 08/03/2021 12:13 pm
Harakiri
(@harakiri)
Active Member
Topic starter answered:
RE: Cracks in Layers

@clarmrrsn

first Layer has no cracks it only Happens on walls and infill.

 

Posted : 08/03/2021 12:39 pm
Clarmrrsn
(@clarmrrsn)
Honorable Member
RE: Cracks in Layers

What are your rods, bearings and belts like

Belt tension ok? Rods and bearings lubricated?

Tank you very much!

Posted : 08/03/2021 12:52 pm
keithroe
(@keithroe)
Eminent Member
RE: Cracks in Layers

What filament is this?  I am seeing similar issues, but only with one filament type (Overture Matte PLA).  

Posted : 08/03/2021 3:16 pm
Harakiri
(@harakiri)
Active Member
Topic starter answered:
RE: Cracks in Layers

I recently checked the belts and rods. All lubricated too.

 

it basically happens with every filament, strange enough: Matte colored filament (e.g eco filament, matte black) has not that many cracks.

Posted : 08/03/2021 4:25 pm
keithroe
(@keithroe)
Eminent Member
RE: Cracks in Layers

I wonder if maybe it is under-extrusion and doing a standard extruder calibration would help: https://all3dp.com/2/extruder-calibration-6-easy-steps-2/

I only recently received my Prusa Mini, so I am not sure if it has built-in tools to help with this type of calibration.

 

 

Posted : 08/03/2021 4:41 pm
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