I have a new P1S. Benchy and a Squishy Turtle from the SD card printed beautifully. I have the supplied textured PEI plate as well as a SuperTack cool plate. I’m using Bambu PLA Basic.
I’m unable to successfully print anything from Bambu Studio. The first layer is a hot mess.
The outer perimeter lays down nicely, but the infill of the first layer is terrible.
It seems to be a problem when the extruder head changes directions. It stops laying down filament, but then gobs it back up on the return pass. This leaves a gap between the infill and the perimeter. The gap is about 5mm.
I tried changing to a concentric first layer - it had the same sort of problems. I’ve tried both build plates, increasing the bed temperature, decreasing the first layer thickness, and a few other things suggested here. So far, nothing has made a difference.
I ran the Flow Dynamics calibration through OrcaSlicer with the following result.
The top line looks best to me, but the right hand side of each V shows some mess. Interestingly, the rectangle at the right came out great. It looked like the print head stopped after each stroke more than it does in my other prints.
I tried OrcaSlicer because it was mentioned a few times as being helpful. It made no difference in this situation.
Just a hunch, the gap between nozzle and the bed for first layer was not correct, due to nozzle was not cleaned correctly, or one of the LMUU8 linear bearings on the Z rails popped up out of its place a bit and prevented correct bed leveling
Is there any way to access the results from a calibration or bed leveling? Is there any way to use that test as a diagnostic? Will it throw an error if it is unable to level the bed?
This gap is most often caused by an incorrect pressure advance value. Often it is out by a factor of ten so check your decimal place when entering the value.
In Bambu Studio, I can’t find any option for Pressure Advance – when I search for it under filament, it looks like it will be there, but it doesn’t come up.
In OrcaSlicer, there is an option – but just an on/off option, nothing with a parameter that can be adjusted.
I assure you, to my knowledge, none of the settings are set to anything other than default.
In BambuStudio, all my presets are labeled for the X1 – but I have a P1S. Is that normal?
Before I tried these prints, I tried downloading a poop chute model from Maker World. That was the first time I was using Bambu Studio. There is a possibility that I downloaded an X1C profiled file first. Could that have ‘polluted’ my setup?
In OrcaSlicer, pressure advance is enabled in the filament profile, and the value is entered on the next line:
OrcaSlicer also has the Studio calibration tab for compatibility, but values entered in the filament profile will override values in the Calibration tab.
Wow team… I don’t know what the setting was, but doing a factory reset seems to have fixed it. The print is off to a great start. Until the next challenge…
