Printed this cylinder as part of a larger project and there's a horizontal line that runs up most of the part. Not bad enough to scrap the project but I'm curious if anyone can explain what causes this. Using an Ender 3 printing PLA, Cura slicer.
That’s the seam line where the printer finishes a layer. Thats normal. Most slicers have an options to manually define layer lines or randomize each layer. Random often creates bumps all over your print.