Printable View
I've tried endless combinations in Cura to get a clean print on an oval shaped tube standing upright. The walls have 4 layers total. I'm running and Ender 3 Pro with SKR Mini 2.0 and PETG. I've had some prints with clean outside but never clean inside. I tried slowing down, changing hot end temp, combing, retraction, surface mode, arc welder, etc. I'm at my wit's end. Any suggestions? Here is my project file.
https://drive.google.com/file/d/15d3...ew?usp=sharing
Attachment 16812
For me as a beginner looks like a cooling problem of the filament. Maybe turn down the cooling ¿?
Looks a bit like low extrusion and possibly a bit of wobble, maybe slow it down a little also.Do smaller prints come out OK?Have you tried a calibration cube and measured it? To check your extrusion.
Thank guys. I found the problem. A close look at the preview showed an inner wall line was discontinuous. Thinning the wall a bit got rid of that line and then it came out great! Lesson learned - analyze the preview.