Printing TPU on Bambu Lab P2S

Overview: This video provides a complete guide to printing TPU on the Bambu Lab P2S printer, including hardware setup, filament loading, drying requirements, custom profiles, and print results.
Mads Tech -Bambu Lab P2S & TPU - Everything You Need To Know!: https://www.youtube.com/watch?v=r4Qt5Yn1c6w
Hardware Setup & Limitations
[00:01:01] AMS incompatibility: Standard TPU (Bambu TPU90/95 or third-party like Overture/Sainsmart) cannot use AMS or manual spool input
[00:01:37] Direct feeding required: Bypass filament buffer - feed TPU directly into extruder (top) or printer back
[00:02:24] PTFE tube modification: Replace stock tube with spare PTFE for top feeding
[00:03:10] Spool holder solution: Use AMS lite, printed stand, or filament dryer due to awkward spool positioning
Filament Loading Process
[00:03:38] Back feeding method (preferred): Push TPU through until it reaches extruder
[00:03:50] Printer configuration:
Step
Action
1
Select "External Spool" → "Generic TPU"
2
Choose color
3
Acknowledge TPU warnings
4
Load filament (apply gentle pressure until grabbed)
[00:04:23] Cold pull recommendation: Bambu suggests it for cleaning; creator rarely needs it
Critical TPU Preparation
[00:05:07] TPU is highly hygroscopic - must dry before use
[00:05:26] Moisture symptoms:
Problem
Cause
Stringing
Wet TPU
Surface bubbles
Moisture in filament
[00:05:39] Even new TPU needs drying - don't assume it's dry
Printing Setup in Bambu Studio
[00:06:02] Profile options:
Profile Type
Notes
Generic TPU
Built-in, good starting point
Bambu TPU
For official filaments
MADS TPU 95P2S
Custom profile for Overture TPU (download available)
[00:07:17] Custom presets available: Tree supports & standard supports
[00:07:49] Profile disclaimer: Custom profiles optimized for specific use case; Bambu defaults work well
Print Results & Quality
[00:08:11] Demo print: DJI Osmo Nano case
[00:08:18] Quality achieved:
Feature
Result
Surface finish
Very clean, no bobbling
Overhangs
Tidy
Support removal
Easy, minimal residue
Interface layers
Clean
[00:09:07] P2S capability: Matches other Bambu printers for TPU quality
Pro Tips & Accessories
[00:09:21] Bambu splitter upgrade: Allows multiple PTFE inputs for easier TPU swapping
Download links: Custom TPU profiles in description
Conclusion
The Bambu Lab P2S prints TPU excellently with proper setup. Key takeaways: Direct feed (bypass AMS/buffer), always dry TPU, use appropriate profiles. Custom profiles available but Bambu defaults sufficient for most users.