Why are they appearing and how can I prevent them from occurring?
It's hard to tell from a photograph but I suspect your wall thickness needs tweaking.
Please save your project as a .3mf file
Files > Save Project as
Zip the .3mf and post it here. It will contain both your part and your settings for us to diagnose.
Secondly, is there a way to avoid stringing? It occurs on every print I do (PLA).
Dry your filament.
Cheerio,
RE: How to prevent printing lines?
Thank you for your willingness to help. I have attached my zipped .3mf file: Christmas Tree.
I tried another print at 190 C and the print seemed to turn out better. Could it just be a temperature thing? I am looking into getting a filament dryer as a measure to reduce/prevent stringing.
First a general comment: White and pastel filaments are always trickier to print because they contain so much pigment that their flow can become non-Newtonian. Functional prints that require accuracy are often better printed in neutral, dark, or better, translucent colours.
This part has some interesting optimisations, is it a download file from two or three years ago? It appears to be intended for a Classic perimeter generator; you have Arachne selected (often better but not this time) and, probably, a regular nozzle - you have HF selected.
I don't have a Core One to test it on but I would expect it to print OK with dry, dark filament and the Classic perimeter generator.
Print Settings > Layers and perimeters > Advanced > Perimeter generator
If problems persist it may print better if you slow the print by 15-20%
Be aware that as the 'cutting edge' is only a single perimeter thick it will be fragile and may not last long.
Cheerio,