I’m trying to resolve issues with my x1c. I’m trying to 3d print a dice tray and getting significant amount of underextrusion which impacts the print. The first layer looks alright but quickly the print quality drops.
This issue has occured across standard non-matte pla as well as petg.
As well as across multiple different stl print files.
I’ve found it to be somewhat inconsistent, where 90% of the prints will have this problem. While the remaining prints wont.
E.g. I performed one print completely fine, removed from plate and then reran the same print within it then having these issues where it didn’t 10 minutes before
- I’m using a matt pla from siddament https://siddament.com.au/products/matte-black-pla-1-75mm-1kg
- Bambu labs x1c
- Bambu labs slicer
- Bambu labs cool plate
- Standard configuration for PLA from Bambu labs
- 0.20mm standard system preset for x1c
- using auto bed leveling from bambu labs
- occurs on different filament types
- occurs on different models
The spool was connected to a non AMS heating compartment, I’m wondering if there has been some torque/pulling issue that has caused this. The print head and extruder unit have been replaced trying to solve this.
As use Siddament filaments as my defaults and prefer the matte PLA over any other as it provides the smoothest surface quality.
Nearly invisible layer lines…
Only thing I could complain about is their packing and shipping as quite often rolls have bags that are no longer vacuum sealed.
You pics are too inconsistent to be caused by calibration issues.
Here is what I suspect in random order to check:
ACTUAL extrusion temp.
The compound used for the temp sensor and heating plate can dry out, get crumbly and return you get wrong readings and temperatures.
State of the hotend itself…
Like it or not they are consumables and do wear out over time.
They also love to accumulate debris and overcooked filament.
If these bits and pieces get in the way of the flowing filament…
Extruder issues…
Sometimes it is as easy as cleaning the thing out and to use a needle to get the stuck bits out of those grooves.
A dirty/slipping extruder could provide print results like yours…
I use Siddament Matte Black and find it nicer than bambu’s. They work well with a normal dry session and calibration and haven’t had any defects to date. I run between 0.029 for the K and between 0.97- 0.989 flow rate with 22mm/s volumetric (this could be lower).
Based on the information provided, you are using the Bambu Lab PLA filament profile with an aftermarket filament.
The Bambu Lab PLA filament profile has a high volumetric flow rate setting as the filament is formulated to flow faster. If the aftermarket filament does not support such high volumetric speeds, the issues seen in the pictures will occur.
A solution is to use the Generic PLA filament profile as it has a lower volumetric speed and should provide you with better results.
Alternatively, you can also try to increase the hotend temperature with +5C and try using a 0.16 mm layer height which could help get better results.
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