Causes for Layer Tearing, Diagonal Spirals PETG (pics of issues in post)
 
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Causes for Layer Tearing, Diagonal Spirals PETG (pics of issues in post)  

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nwind21
(@nwind21)
New Member
Causes for Layer Tearing, Diagonal Spirals PETG (pics of issues in post)

Hey all,

After doing a decent Benchy test print, I moved up to a longer 13h print and while it came out ok, I noticed these artifacts and not sure what would cause these (highlighted in yellow). These are still my "first" prints so testing the build in different scenarios/materials.

This is Prusa's PETG filament.

  • Default Printer Settings
  • Modified Prusament PETG profile to slow print down if layer print time < 5s to print to 3mm/s. I had to do this for small text outlines on the benchy test print. It was moving WAY too quick on some text outline in the first layer and the filament didn't have a chance to adhere to the plate.
  • Modified Print Settings based on 0.15 Quality.  Upped layer height to 0.16 per the print specification and running drastically slower speeds at 40mm MAX on most print moves with some down to 25-30mm and reduced acceleration to 400 mm/s^2 MAX on all features.

Does anyone know what could cause these skips/tears? Underextrusion?

Thanks!

This topic was modified 3 months ago by nwind21
Posted : 27/06/2021 8:33 pm
Diem
 Diem
(@diem)
Noble Member
RE: Causes for Layer Tearing, Diagonal Spirals PETG (pics of issues in post)

Print Settings > Layers and perimeters > Seam position

- will let you move the spiral seam.

As for the rest; is this a new printer?

I suggest you ignore it for a little while. During the first few weeks of use the printer will run-in and settle its parts together; then you will have to go over the basic maintenance checks, lubricate and recalibrate. Even if you got everything dialled in perfectly today, it would all need re-doing.

Better to settle, temporarily, for a basic working printer and get some useful printing done, make your early mistakes, establish a routine and generally get used to the process. Then when you do your one month service you can take extra care knowing the new settings on your now stable printer are likely to last for several months.

Cheerio,

Posted : 28/06/2021 1:46 am
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