Quick Start

Download the project, open it in Bambu Studio, then save both:

• The Sunlu PLA Meta filament profile
• The process profile

Both contain the tuning used for these prints.

You can also save the included G-code, which is set up to run with no purge waste (poop).

Sunlu PLA Meta (Black) – My Personal Tuning & Settings

I found Sunlu PLA Meta much more difficult to get "just right" compared to standard Sunlu PLA or their High Speed PLA. It took me a significant amount of time to tune this filament, so I am sharing my settings here to hopefully save other users some of the troubleshooting I had to do. 

Please share your results. If you’ve found other settings that work well, I would like this to be an open forum to help fine tune this filament together.

Slicer Profiles & Recommendations

I have dialed this in for the Bambu Lab P1S. Since different slicers handle flow and pressure advance differently, I've included an alternate for Orca users to test.

Bambu Studio (My Verified Settings)

• Flow Ratio: 0.95 (Filament Tab)
• K-Value: 0.035 (Device Tab > Edit K value on the filament in AMS/External)
  • I did have success with lower values, but this provided the best prints with this flow ratio.
• Max Volumetric Speed: 21 mm³/s (Filament Tab)
• Nozzle Temp: 200°C for all layers (Range: 195°C–225°C)
• Auxiliary Fan: 0% (OFF) (Filament Tab > Cooling)
  • Top lid off

Orca Slicer (Alternate to Test)

• Flow Ratio: 0.92
• Pressure Advance (PA): 0.028
• Auxiliary Fan: 0% (OFF)
• If you try these Orca-specific settings, please let me know how they work for you!

Optimized Top Surface (No Ironing)

I’ve tuned these specific settings to get a very smooth top layer without needing to use the Ironing feature. Follow these paths in your slicer:

• Strength / Top/bottom Shells: 
  • Top Shell layers = 6
• Strength / Top/bottom Shells: 
  • Top surface pattern = Monotonic Line
• Quality / Line Width: 
  • Top Surface = 0.3
• Speed / Other layers speed: 
  • Top Surface = 45
• Quality / Ironing: 
  • Ironing Type = No ironing

Environment & Hardware Setup

I print in Houston, TX, where the natural ambient environment is typically very hot and humid. However, this filament was tuned in February when the local temperature and humidity are very mild. Environment plays a factor in print success, so keep that in mind.

1. Climate Control: HVAC is set to keep the printing area at 75°F.
2. Lid: Printed with the top glass lid OFF.
3. Build Plate Placement: Avoid the back-right corner of the P1S. I encountered consistent issues in that specific spot. For best results, especially with the slow top-surface speeds used here, move your parts toward the front of the build plate. 

Attributions & Calibration Tools

I used the following community resources to help dial in these settings. Check them out if you want to run your own calibrations:

• Temperature Tower: Used the Calibration Tower PLA by Xeraj to find the 200°C sweet spot.
• Top Surface Guide: Used the Advanced Top Surface Guide by Criticalprint3d to optimize the finish without ironing. This guide has been very helpful in many other filament tunings, check it out if you want to speed up your prints by avoiding the ironing pass. You simply have to slow down that top layer.
• 3DBenchy Model: Used the Original 3DBenchy – Public Domain CAD (STEP) File by Creative Tools (via MakerWorld) for testing and as a reference model for others to download and compare results.

I’m still testing why the back-right corner is problematic with this filament, but for now, these settings and placement have been the "fix" for me. Hope this helps!