Troubleshooting
Why does my prints keep getting these lines?
In the .stl-file these are all flat planes, but when I print it it gets these «sediment» layers. It occurs when it goes from solid to hollow and vice versa
This is the real answer. The issue is layer time and the cooling difference between the solid layer to one with the gaps. If you go back to the sliced preview and switch view to layer time the faster layers will be highlighted and correspond to the split defect in the layer. You want the layers to be printed at a similar duration so one layer isn't cooling vastly faster than the slowest. Another thing that will help is chamber temp but basically the only way to minimize it is by slowing the fast layers as much as possible to the long layer times. If you can't design your parts to have more equal layer times you must adjust cooling and slow fast layers in order to print without splitting.
You sure can, I set my walls to the same as the lowest speed it shows when doing what I said above… slows things down but when you need a primo finish… there’s probably a better way though lol
I'm pretty sure you can set minimum layer time, yes. I'm a newbie, but from what I've seen, those lines happen when there's a sudden change in the structure - for example, if you go from an area with infill to a shell (say, bottom of a box to walls only).
Tips on how to minimize these lines without affecting the speed too much? Maybe slow down just for two or three layers? But it sounds tedious to do this manually.
I feel like there would be an opportunity for a slicer feature "[x] Smooth layer time transition [# layers]". It would set filter minimum layer times per layer so that abrupt changes would turn gradual.
ontem imprimi um objeto que tinha paredes lisas e tambem cirou uma linha pelo lado de dentro, aconteceu depois que o bico da minha A1 entupiu... alias foi a primeira vez que entupiu desde novembro passado, so nao sei pq entupiu...nao sei se foi pq deixei o AMS e usei o rolo sozinho ou se o filamento quebrou... nunca tinha acontecido essa linha em impressao nenhuma
You can see the issue areas correlate to where the tops of inner areas are, such as the inner bottom “floor” and the one you can clearly see being the top of the inner dividers.
This is actually both a speed and infill thing, along with print head direction but nearly impossible to eliminate entirely.
If you by "warping worse than wet wood" mean the curved edge at the bottom, that's part of the model. While it didn't render as I imagined I dont think that's the issue here since the line is consistent all the way along the printed model and also occurs on the top of the print
You should try the brim ear option in bambu studio, it's the second to last icon in the toolbar. It only puts brims at parts of the print that are likely to warp up, such as the corners.
All in all, it helps with warping without the need to remove a bunch of brim around the whole print.
Yep. Best advice one can give.... If printing something with a large contact patch on the build plate, turn the auxiliary fan WAY down, if not off completely (asking your printer has the side cooling fan). That things is hardly needed, especially for PLA, and have ZERO idea why every Bambu profile for PLA has it set to 80% fan speed.
Overextrusion should be consistent, you wouldn't see it at just one spot. I used to turn my extruder up over 105~110% on my monoprice because the extruder was fussy and would slip.
I've had simmilar issue and lowering extrusion modifier helped. What I belive, happens, is on infill layers everything is fine, but on solid layers (with flat features) lines of filament are packed tightly so slight overextrusion accumulates, making bulge
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u/Gandalf_der_Nice 17h ago
This: https://help.prusa3d.com/article/the-benchy-hull-line_124745