Waves on outer perimeter
Hi all,
Finally received my CoreOne kit, assembled it and started with tests. Overall, no major complains, except some strange waves on outer perimeter, especially visible for bigger models.
Lets use this model as an example - https://www.printables.com/model/1338041-organizzatore-gt438/files#preview.file.5JBxm
It's a simple box (200x160x60), printed in PETG (Elegoo Rapid PETG, Prusa HF 0.4 nozzle, 0.2mm structural, 2 perimeters, orientation - vertical). Overall its ok, but outter perimiter suffers from this strange wave patterns (see photos).
Any ideas where shall I dig to improve it?
Thanks!
RE: Waves on outer perimeter
Does it also happen for objects with infill? Only two perimeters, stacked on top of each other, are prone to show any small inaccuracies, since the filament isn't really "supported" and can flow "away".
Reducing or increasing the print fan speed can help. Either "not blowing the wall out of position" or "cooling the laid down lines faster, so they stay in position".
Does stealth mode help? (lower acceleration values)
The bigger lines are what I wouldn't call "totally normal", the finer waves, sadly are, for now:
https://forum.prusa3d.com/forum/prusa-core-one-hardware-firmware-and-software-help/vfa-artifacts-on-xy-straight-edges/
@raaz-2 is correct. That part has not been designed well for 'ordinary' 3D printing as the walls are too thin for stable printing with a standard nozzle. As a rough guide, the thinnest easy-to-print walls start at 5 extrusion widths, the default extrusion width with a 0.4mm nozzle is 0.45mm so expect to need at least 2.25mm thick walls for clean printing. You should get a better result with a smaller nozzle.
However, as it's just a workshop storage bin a few minor wobbles shouldn't affect its function.
Cheerio,
RE: Waves on outer perimeter
Did you follow the gear alignment properly?
https://help.prusa3d.com/article/gearbox-alignment-core-one-mk4-s-mk3-9-s_465779