Printer Filament Guide

Best Filament for the Bambu Lab P1S

The enclosed P1: same speed as the P1P, plus the warm chamber that unlocks ABS, ASA and PC.

Last updated: June 2026

The P1S is the P1P with the panels on: a fully enclosed 256 mm CoreXY printer with the same direct-drive extruder, 300°C hotend and 500 mm/s ceiling, plus an auxiliary part-cooling fan and a chamber regulator fan. That enclosure is what you're paying for, since it traps bed heat into a passively warm chamber, exactly what warp-prone materials need. It's stayed in Bambu's lineup alongside the newer P2S rather than being replaced.

What the Bambu Lab P1S prints well

Recommended materials for this printer:

PLA PLA+ PETG TPU PLA-CF PETG-CF ABS ASA PC Nylon CF / GF composites

Enclosed and abrasive-ready out of the box, so it handles the full range from PLA to engineering composites, no nozzle swap needed.

Cheapest filament for the Bambu Lab P1S right now
Loading live prices...

That enclosure widens the menu a lot. On top of the P1P's PLA/PLA+/PETG/TPU comfort zone, the P1S handles ABS, ASA, PC and nylon without the corner-lifting and cracking you'd fight on an open frame. There's no active chamber heater, so the very largest ABS/PC parts still benefit from disabling part cooling and running a hot bed, but for everyday engineering work it's solid. The stock 0.4 mm nozzle is stainless, so install a hardened nozzle before running CF or GF composites.

Bambu Lab P1S specs that affect filament

Build volume
256 × 256 × 256 mm
Enclosure
Enclosed
Heated chamber
No
Extruder
Direct drive
Max hotend temp
300°C
Stock nozzle
Stainless steel 0.4 mm
Abrasive-ready (CF/GF)
Yes, out of the box
Multi-material
AMS / AMS 2 Pro (4 spools per unit, up to 16 colours)

Best for the maker who wants one machine that prints both display models and functional parts: PLA for the figurines, ABS/ASA/PC for brackets and enclosures that live in heat or sun. Pair it with an AMS 2 Pro and you get up to 16-colour printing plus active drying, which makes nylon and PETG far less fussy.

Filament notes for the Bambu Lab P1S

  • The enclosed chamber unlocks ABS, ASA, PC and nylon, the main upgrade over the open-frame P1P.
  • PLA, PLA+, PETG and TPU all print great; for PLA you can crack the door/lid to vent excess chamber heat.
  • No active chamber heater, so for large ABS/PC parts, raise bed temp, close everything and reduce part cooling to hold ambient warmth.
  • The stock 0.4 mm nozzle is stainless, so switch to a hardened nozzle before PLA-CF, PETG-CF, PA-CF, PC-CF or any GF blend.
  • Direct drive handles TPU and other flexibles cleanly. Keep retraction modest and speeds in the printer's TPU profile range.
  • The AMS 2 Pro adds active drying, a real difference for hygroscopic nylon, PC and PETG that otherwise string and pop.
How SpoolHound tracks prices

The deals above are filtered to the materials the Bambu Lab P1S handles, aggregated from multiple retailers daily and normalised to cost per kg, so the cheapest in-stock option is always on top. Prices refresh every 24 hours and are region-aware, so switch your region in the nav. Click through to the retailer to confirm the live checkout price.

Frequently Asked Questions

Does the P1S have a heated chamber?
No active heater. The enclosure is passively warmed by the heated bed, which is enough for ABS, ASA, PC and nylon. For the biggest, most warp-sensitive parts you compensate by maxing bed temp and dialling back part cooling rather than relying on a powered chamber.
Can the P1S print carbon-fibre and glass-fibre filament?
Yes, the enclosure and 300°C hotend suit PLA-CF, PETG-CF, PA-CF, PC-CF and GF blends. Just replace the stock stainless 0.4 mm nozzle with a hardened one first, since abrasive fillers wear soft nozzles out quickly.
What's the difference between the P1S and P1P for filament?
Same hotend and extruder, but the P1S's enclosure adds reliable ABS, ASA, PC and nylon. On a stock open P1P those materials warp and crack; the P1S handles them out of the box. For PLA/PETG/TPU the two are equivalent.
How many colours can the P1S print?
Up to 16 with four AMS units chained. A single AMS or AMS 2 Pro gives four spools; the AMS 2 Pro also adds active filament drying, which helps with PETG, nylon and PC.

Different printer? See filament by printer for the rest of the lineup, or browse cheapest filament by material.