SpoolIndex

The Filament Price Index

Updated July 22, 2026

Best Filament for Bambu Lab P1S

The Bambu Lab P1S is the best-selling enclosed printer of 2026. It delivers 90% of the X1C capability at 60% of the price. Here is our guide to the best filaments for your P1S.

Printer Guide
The Bambu Lab P1S is the value king of the Bambu lineup. It shares the same 256 mm³ CoreXY frame, direct-drive extruder, and AMS compatibility as the flagship X1C, but costs significantly less by omitting the LiDAR sensor, hardened steel nozzle, and 120 °C bed. With its enclosed polycarbonate chamber, 300 °C hotend, and 100 °C bed, the P1S covers the vast majority of materials most users will ever need. PLA and PLA+ PLA prints flawlessly on the P1S. Unlike open-frame printers, the P1S chamber needs attention — keep the door open or top glass removed during PLA prints to prevent heat creep. Nozzle temps of 200–220 °C and bed temps of 55–65 °C work perfectly. Bambu's default PLA profiles are excellent. PLA+ prints identically with improved toughness. PETG PETG is reliable on the P1S at 240–260 °C nozzle and 75–85 °C bed. As with PLA, vent the enclosure by opening the door or removing the top panel. The P1S's chamber heats up to ~40–45 °C during PETG printing, which helps with layer adhesion but can cause stringing if not vented. Use a textured plate or glue stick on PEI for easier release. ABS and ASA This is where the P1S truly shines. The enclosed chamber naturally reaches 45–55 °C during ABS printing, eliminating the warping issues that plague open-frame printers. Bed temperature at 100–110 °C, nozzle at 260–280 °C. ASA prints on nearly identical settings with better UV resistance and less odor. The P1S makes ABS as easy as PLA — just close the door and print. TPU and Flexible Materials The P1S handles TPU through its direct-drive extruder. As with all Bambu printers, TPU must be loaded through the external spool holder — the AMS cannot handle flexible filaments. Print at 20–40 mm/s with nozzle temps of 220–240 °C and bed temps of 40–50 °C. The short filament path on the P1S handles soft TPU (85A–92A) well. PA (Nylon) and PC The P1S can print nylon and polycarbonate, but with some limitations compared to the X1C: - PA: Nozzle at 260–290 °C, bed at 80–100 °C. The P1S chamber reaches ~45 °C, which helps but a dedicated dryer is essential — nylon must be bone-dry before printing. - PC: Nozzle at 260–280 °C, bed at 100 °C (the P1S maximum). The 100 °C bed and plastic enclosure limit large PC prints. The X1C's 120 °C bed and metal-frame chamber handle PC better for large parts. PA-CF and PA-GF require a hardened steel nozzle upgrade (not included with the P1S). P1S vs X1C: Material Differences The X1C has three advantages for advanced materials: 1. 120 °C bed vs 100 °C — better for large PC and PA prints 2. Metal-frame enclosure vs plastic — higher chamber temps (50–55 °C vs 40–45 °C) 3. Hardened steel nozzle stock — ready for CF/GF filaments out of the box For PLA, PETG, ABS, ASA, and TPU — the vast majority of what users print — the P1S and X1C produce identical results. Only push to the X1C if you regularly print with high-temp engineering materials.

FAQ

Do I need a hardened nozzle for the P1S?
Not for standard materials. The P1S ships with a stainless steel nozzle that handles PLA, PETG, ABS, ASA, and TPU perfectly. For carbon-fiber or glass-filled filaments (PA-CF, PLA-CF, PETG-CF), you need to upgrade to a hardened steel nozzle — available from Bambu Lab for about $15.
Can the P1S print polycarbonate?
Yes, but with limitations. Polycarbonate requires 100 °C bed temperature (the P1S maximum) and benefits from higher chamber temperatures than the P1S naturally reaches. For small-to-medium PC parts, it works well. For large PC prints, the X1C with its 120 °C bed and higher chamber temperature is a better choice.
Is the P1S chamber hot enough for ABS?
Yes — the P1S chamber naturally reaches 45–55 °C during ABS printing, which is more than sufficient to prevent warping. Close the door and optional top glass, and preheat the bed at 100–110 °C for 5–10 minutes before starting your ABS print.
What is the difference between P1S and X1C for filament compatibility?
The P1S and X1C share the same extruder, hotend (300 °C max), and AMS compatibility. The X1C adds a 120 °C bed (vs 100 °C), a metal-frame enclosure that retains more chamber heat, and a stock hardened steel nozzle. For PLA, PETG, ABS, ASA, and TPU, they are identical.
Do I need to vent the P1S enclosure for PLA?
Yes — keep the front door open or the top glass removed when printing PLA. The enclosed chamber traps heat that can soften PLA mid-print, causing jams. For ABS and ASA, close the enclosure fully. For PETG, partial venting (door slightly ajar) works best.
The P1S is the smartest choice for most users. It covers PLA, PETG, ABS, ASA, TPU, and some engineering materials at a fraction of the X1C's cost. If you only occasionally print nylon or PC, the P1S handles them adequately with the right preparation. Browse our current deals on P1S-compatible filaments to find the best prices on spools for your enclosed Bambu printer.

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