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Print fails with "frayed" ends(feddit.org)

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i_like_water@feddit.org
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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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Andy@slrpnk.net
4 points

This looks like a clog caused by retraction.

Is it clogged when it finishes? Also, does the cooling change at this layer? Is there anything specific to this layer?

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i_like_water@feddit.orgOP
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I assume, a clog would be obvious to notice? I don’t think it was clogged. I did multiple attempts back to back and it started the next attempt without problem at layer 1. As someone, who is rather an amateur, I don’t see anything special about this layer.

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fuzzy_feeling@programming.dev
4 points

not sure, but looks like vase mode, where there shouldn’t be any retraction.

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i_like_water@feddit.orgOP
2 points

It’s not vase mode, but the model creator designed it to print layers without retraction. It only does a retraction to start the next layer.

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