Lines on the top
Hi! How can I remove the lines on the black top level? I turned on retraction and “avoid crossing perimeters”. I printed with PETG, 150 speed, 0.075 pa (measured with lines test), 0.93 em (measured with cube test), 230 Celsius of temperature. I’m pretty happy with the print quality at all, but I would like to eliminate that lines on top…suggestions?
29 Replies
correct-apricot•2y ago
The top right line is a nozzle movement…the bottom lines is a conjunction..I noticed that the infill is not continuous from start to finish but jump from a point to another and when returns to finish the gap it makes those lines…
genetic-orange•2y ago
Is it a monotonic top infill already?
other-emerald•2y ago
Monotonic Infill and proper Extrusion Multiplier Calibration, that part is over extruded
And reducing top layer line width to 80% of Nozzle Diameter in combination with on Point Flow Calibration can give you a total smooth surface
other-emerald•2y ago
Like this
correct-apricot•2y ago
Ok I’ll try. actually is a Rectilinear top infill.
Can I use ironing on top of Monotonic infill?
other-emerald•2y ago
Ironing is in general not so good, reducing of the top layer line width to 80% of nozzle diameter does the same and the result is mostly better
correct-apricot•2y ago
What is Point Flow Calibration?
other-emerald•2y ago
you have to calibrate the Extrusion Multiplier for each Filament, depending on the manufacturer even each spool
correct-apricot•2y ago
Ah ok, yep I already did it
other-emerald•2y ago
not to be rude, but the above black surface is not well calibrated, there are severe signs of overextrusion
correct-apricot•2y ago
np
Monotonic filled or the normal one?
other-emerald•2y ago
Monotonic just prints from one end to the other so you don't have this irregular look on the top
correct-apricot•2y ago
Yep, but Monotonic has two types:
other-emerald•2y ago
ahh yes sorry, just the normal
correct-apricot•2y ago
With monotonic it looks a way better, but I have to calibrate the flow for this filament to make it even better.
correct-apricot•2y ago
Now the remaining issue is the nozzle lines…
correct-apricot•2y ago
I have the crossing perimeters option ON...
other-emerald•2y ago
It is still a bit to much flow, the nozzle drags over the little hills, but easier way to avoid it would be a small z hop
correct-apricot•2y ago
it can be a lower z-offset instead of flow? because I strictly follow this guide:
https://ellis3dp.com/Print-Tuning-Guide/articles/extrusion_multiplier.html
other-emerald•2y ago
How much z Hop you have now?
correct-apricot•2y ago
z-hop is disabled, I mean z-offset, the distance between nozzle and bed...could it be too low causing the ridges?
other-emerald•2y ago
No, the Squish would have no effect after a few layers
correct-apricot•2y ago
ok
Now I redoing the EM test cubes
conventional-tan•2y ago
Hi! how is it going did you solve it? @arcy0185 I'm still having the same problem
correct-apricot•2y ago
Hi! I followed the @heisenberg19x suggestions: I fixed my extrusion multiplier and changed the top fill with Monotonic.
BUT..
I got better results with PrusaSlicer than SuperSlicer.
PrusaSlicer seems to slice better the color change. In SuperSlicer the letters appears before completing the top layer, and this causes visible lines because the nozzle has to jump and was interrupted by the letters.
correct-apricot•2y ago
As you can see the first two images represent Prusa's slicing.
correct-apricot•2y ago
I'm sure that I can obtain the same results with SS with a bit of more effort. Maybe some properties are not well configured in SS.
Anyway, the last issue I have to fix to make this print perfect is the lines around the holes that appears in both SS and PS:
like-gold•2y ago
@arcy0185 please update if you manage to fix the lines around the holes… I have the same exact issue
correct-apricot•2y ago
Sure, with the help of the community I hope we can fix.
I open a differente thread for this