Bambu Lab P1S

Name: Bambu Lab P1S
Brand: Bambu Lab
Price: 349 USD
Availability: InStock

Enclosed 256 mm CoreXY printer with carbon filter, 20,000 mm/s² acceleration and AMS support.

$349Price checked October 28, 2026

Best for ABS and ASA functional partsBest for Multi-color printing up to 16 colorsBest for Small print farmsBest for Upgrading from an open-frame printer

Overview

The Bambu Lab P1S is an enclosed CoreXY printer with a 256 x 256 x 256 mm build volume, 500 mm/s top speed and an activated carbon filter. The enclosure makes ABS and ASA practical, and AMS units add up to 16-color printing.

What it is

The Bambu Lab P1S is an enclosed CoreXY 3D printer with a 256 x 256 x 256 mm build volume. Bambu describes it as the P1P with a full plastic and glass enclosure, extra cooling fans and an activated carbon filter. This listing covers the printer on its own; Bambu also sells it with the AMS or the newer AMS 2 Pro for multi-color printing. As of October 2026 the P1S is still on sale on Bambu's US store, next to the newer P2S, which Bambu markets as the evolution of this classic design.

Key specs that matter

Build volume: 256 x 256 x 256 mm. Bambu notes that Bambu Studio limits printable height to 250 mm by default to protect the heatbed, with a wiki procedure to unlock the rest.
Motion: CoreXY, up to 500 mm/s toolhead speed and 20,000 mm/s² acceleration.
Hot end: all-metal, up to 300 °C, with a 0.4 mm stainless steel nozzle and optional 0.2, 0.6 and 0.8 mm sizes.
Bed: up to 100 °C, dual-sided textured PEI plate included.
Enclosure and cooling: closed-loop part cooling, auxiliary part cooling fan, chamber temperature regulator fan and an activated carbon filter. There is no active chamber heater.
Materials: Bambu lists PLA, PETG, TPU, ABS, ASA, PVA and PET as ideal, PA and PC as capable, and carbon or glass fiber filaments as not recommended without upgrades.
Electronics: 2.7-inch 192 x 64 screen with button control, Wi-Fi, Bluetooth, Bambu-Bus and microSD storage, plus a 1280 x 720 chamber camera at 0.5 fps for monitoring and timelapse.

Who it suits

The P1S suits hobbyists and small businesses who want ABS and ASA alongside PLA and PETG, for example functional parts, car parts or outdoor items. The 20,000 mm/s² acceleration makes it fast on real parts, and the AMS lets it scale to 16 colors with four stacked units. Bambu's store calls it farm-grade and says it is trusted by print farms, and it is the lowest-priced enclosed printer in Bambu's US lineup, which matters for multi-printer setups.

What to know before buying

The P1S uses a small, non-touch 2.7-inch screen with buttons, so most interaction happens in Bambu Studio or the Bambu Handy app. Its camera is low frame rate, fine for timelapse but not smooth live video.

Bambu states that carbon and glass fiber filaments are not recommended on the stock P1S until the extruder and hot end are upgraded, because the stock nozzle is stainless steel. The enclosure is passive, so very demanding materials like PA and PC are rated only as capable. Buyers who want a hardened steel nozzle out of the box, active features like a 5-inch touchscreen, a 110 °C bed or 600 mm/s top speed should compare the P2S, listed at $449 on sale on the same store.

The AMS Combo adds about $130 over the printer-only sale price, and the AMS 2 Pro Combo adds filament drying for a bit more. Factor in multi-color purge waste if you plan frequent color changes.

Specifications

Type	FDM
Price	$349
Build volume	256×256×256 mm
Max speed	500 mm/s
Multicolor	Yes (AMS or AMS 2 Pro (optional, up to 16 colors with 4 units))
Enclosed	Yes
Auto bed leveling	Yes
Connectivity	Wi-Fi, Bluetooth, Bambu-Bus, microSD
Noise	48 dB
Release year	2023

Pros and cons

Pros

The enclosure and activated carbon filter make ABS and ASA practical, which Bambu lists as ideal materials on the P1S.
CoreXY motion with 20,000 mm/s² acceleration keeps real-world print times short on typical parts.
Up to four AMS units can be connected for as many as 16 colors or materials in one print.
At $349 on sale it is the least expensive enclosed printer in Bambu's US lineup on 2026-10-28.
The 256 x 256 x 256 mm build volume handles full-size helmets and large functional parts.
Bambu offers the AMS 2 Pro Combo, which adds active filament drying to the multi-color setup.

Cons

The 2.7-inch screen is small and button-driven, so most control happens through the app or slicer.
Carbon and glass fiber filaments are not recommended until the stock stainless steel nozzle and extruder are upgraded.
There is no active chamber heating, so PA and PC are rated only as capable rather than ideal.
The chamber camera records at 0.5 fps, which suits timelapse but not smooth live monitoring.
Bambu Studio caps printable height at 250 mm by default, and using the full 256 mm needs extra steps.
The newer P2S offers a 5-inch touchscreen, 110 °C bed and hardened steel nozzle for $100 more on sale.

Frequently asked questions

Is the Bambu Lab P1S discontinued?

No. On 2026-10-28 the P1S was listed and in stock on Bambu's US store at $349 for the printer alone. Bambu also sells the newer P2S, but it has not announced an end of life for the P1S.

Can the P1S print carbon fiber filament?

Not on stock hardware. Bambu says fiber-reinforced filaments are not recommended until the extruder and hot end are upgraded, because the included nozzle is stainless steel. The P2S and X2D ship with hardened steel nozzles.

How many colors can the P1S print?

Bambu says up to 16 colors when four AMS units are connected. The AMS Combo and AMS 2 Pro Combo bundles each include one unit with 4 slots.

What is the difference between the P1S and the P2S?

Both have a 256 mm cube build volume. Bambu's official specs list the P2S at 600 mm/s, a 110 °C bed, a hardened steel 300 °C nozzle, a 5-inch touchscreen and dual-band Wi-Fi, versus 500 mm/s, 100 °C, stainless steel and a 2.7-inch button screen on the P1S.

Does the P1S work with third-party filament and slicers?

Yes. It accepts standard 1.75 mm filament, and Bambu's spec sheet says third-party slicers that export standard G-code, such as PrusaSlicer, SuperSlicer and Cura, are supported, though some advanced features may not be.

Sources

Verdict

Buy the P1S if you want an affordable enclosed printer for PLA, PETG, ABS and ASA with room to grow into multi-color printing. Look at the P2S or X2D instead if you want fiber-filled filaments out of the box, a touchscreen or faster hardware.

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