I’m having problems fine tuning my settings to get a nice top layer that is clean and smooth, the bottom layer is fine.
I have adjusted the top layer speed to 50mm and acceleration to 500 and it did not seem to help. Other than that I’m using the default .20 standard settings without anything else changed. Using Bambu pla filament with the stock textured plate.
Looks like you’re over-extruding. Your best bet is to run flow rate tuning via OrcaSlicer, but you can try reducing the flow rate in the filament profile iteratively. It’s worse around the lettering, which suggests you may also be over-extruding even more during deceleration. Turning on pressure advance (again, in Orca only) might help with this.
However: are you on an X1? If so, the lidar should have figured out the flow rate pretty close for you, which would minimize the flow rate as the culprit. I tuned my BBL PLA filament and the flow rate and pressure advance were pretty close to their profile, but it varies by printer.
It looks like you may also be getting some buildup from the lower layers and it’s poking through the top layer. Lowering the hot end temperature might help if this is the case.
If you reduce the over-extrusion on the top layer you might benefit by enabling ironing.
Hope this helps.
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Thanks for the suggestion. I have the p1p. I went ahead and did the first pass test and went with the number 5 and set the flow ratio to 1.029 and im now doing pass 2. I have yet to try the pressure advance, should I try and change the hot end to say 215 and see how it goes?
My profile uses temps of 225 (1st) and 220 (others). It will print at 215. See what happens.
I’m just looking at pictures, but I think you went in the wrong direction. If you are over-extruding having a flow ratio > 1 is just going to extrude more. The 0 tile looks decent but -5 might have been the better choice (although it is not in the picture). I’d say tile 5 is over-extruded IMHO. Look at it from an angle and see if the filament is pushing up a bit in the center. Look for ridges - there shouldn’t be any. There also shouldn’t be any gaps between lines - they should just meet and not cause subsequent lines to deform (e.g. ridges).
I sometimes skip Pass 2 if the tile I picked looked good enough.
If the issue is only on the top layer, you could try using the “top surface flow ratio” option and setting it to .9 or so and see if that improves things.
I can’t seem to find this setting, can you point me in the right direction?
Thanks.
I agree with @Rom3oDelta7. It seems to be an extrusion issue.
- Did you tune PA? I advise doing it before flow.
- Is your top surface planer or curved?
- If planar, how many layers? It seems this print is thin and likely only has solid layers. In that case, over-extruding (even if minor) may propagate from the first layer to the top, as there is no void space to accommodate the extra filament.
Many slicers entail this option, but if you cannot find it, you can change the flow rate by adding a custom g-code before the last layer: M221 S100 (the number after S is the flow rate).
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