this post was submitted on 15 Sep 2024
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Hi, I've tried to print a model plane for my father. It's this model, using this LW-PLA right after purchase.

As you can see in the image of this post, the print is going well until it reaches a certain layer, where the filament does not get deposited properly for the entire layer, only intermittently. The following layers then, of course, have the same problem and I get this failed print with these "frayed ends". Additional attempts failed the same way at a similar layer count.

If someone has some experience with lightweight PLA (LW-PLA) and knows what can be done to solve this, I and my father would greatly appreciate the help.

Thanks in advance.

Edit: Additional info: I'm using the PrusaSlicer files from the linked page. Edit2: The printer is Prusa Mk4.

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[–] beeng@discuss.tchncs.de 5 points 2 months ago* (last edited 2 months ago) (1 children)

How's your filament feed at that height, anything getting kinked or stopped? Does it feed in from a different direction? ie from low Benchtop?

Looks like your extruder can grip but not enough/ well enough for the speed. So either it's too fast or your feed is too slow. Or the temp is too low.

Have you got constant layer height set or variable? The latter could cause it too.

[–] i_like_water@feddit.org 3 points 2 months ago

The feed should be alright. The spool is mounted above the printer, and its movement should not be restricted and the filament comes vertically down like this.

I'll experiment with temperature and speed, like you and others recommended.

Looking into the 3mf file, the layer height is constant at 0.3 mm.

Thanks.