ForumCraftware: TroubleshootingPrint failing

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Print failing

#1 · 2022-11-24, 19:16

I am having trouble printing an odd shaped model (kidney). It prints about half of the model perfectly and then I just get spaghetti. Any ideas I can try?

Thanks

#2 · 2022-12-01, 10:29

Dear Stephanie,

Please check the GCode! The spaghetti is caused by the lack of layer adhesion, or missing material under the currently extruded one.

Sometimes the object is not printable without support. it applies even when an inner structure lacks support and the spaghetti escapes 🙂
Often it comes if the object moved away during print. (maybe the extruder pushes it if there is an artifact)
In rare cases the slicer fails and generates a missing(empty) layer, thus ceasing the chance for the layer adhesion for the next layer

Please attach your gcode, and we can examine this particular case.

Best Regards,

András

#3 · 2022-12-01, 14:22

Thanks. I did have an issue with the base layer not sticking to the plate but I cleaned the plate and that seems better. I have attached the files (corrected file added).

Stephanie

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#4 · 2022-12-01, 14:45

Dear Stephanie,

This GCode does not even touch the bed. It starts to print on thin air, and after you could not expect a proper build.

In this case few options are possible:

Use supports to have something to build on
Cut it into two halves, print them without supports and glue/fix them together after printing them
Use models that are prepared for 3D printing

Best Regards,

András

#5 · 2022-12-02, 15:02

Often it comes if the object moved away during print. (maybe the extruder pushes it if there is an artifact)

Is there a way to fix this? I got better adhesion to the plate on my last attempt and when I checked in the entire glass plate was shifted so I think the extruder is pushing the object. I don't see a reason for this and any advice on how to trouble shoot would be appreciated.

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#6 · 2022-12-05, 10:44

Dear Stephanie,

As you see in your GCode, there is only a tiny area that touches the bed. You have to increase it if you want sufficient first-layer adhesion.

Paint there some support.
A dirty solution, but I used to do it when the accuracy is not that important: push the object 1-2 mm down, so the bed cuts a little part of the object. This way you increase the first layer area, but there will be a tiny flat part on the object

If you have sufficient first-layer area and it still fails, try the usual tricks:

Clean the bed with isopropyl alcohol
Recalibrate the bed or ensure it is optimal
Slow down the first layer further
Increase the bed temperature little
Use 3D Printing adhesives

Best regards,

András