Open-frame alternative
The A1 matches the nominal 256 mm build and 500 mm/s maximum, weighs less, and omits the enclosure. See A1 vs P1S. [1]
Quick verdict
My choice when you need ABS or ASA and the AMS option in a 256 mm enclosed printer. The stock P1S is not the pick for carbon- or glass-fiber filament without upgrades, and its low-frame-rate camera is a limitation rather than a selling point. Not tested hands-on. [1] [3]
Best fit
- You need a 256 x 256 x 256 mm build with an enclosure and activated-carbon filter. [1]
- You want ABS or ASA, both listed as ideal by Bambu. [1]
- You want optional AMS multicolor support, up to 16 colors with four units. [1]
The existing comparison records a plain P1S and a P1S Combo with AMS under the Amazon listing, sold by Bambu Lab Store at that check. Confirm today’s seller and selected variant; no current stock claim is made. [1]
Before you buy: Allow the 500 x 500 x 950 mm space Bambu suggests, not merely the printer’s body dimensions. Check the exact Amazon seller’s warranty coverage rather than assuming it matches a direct US-store order. [1] [4]
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What it can do: size, materials and setup
The 256 mm height needs context: Bambu Studio defaults to 250 mm. Check your sliced job rather than assuming the full nominal height is immediately available. PA and PC are listed as capable, not ideal; fiber-filled materials need the hotend and extruder upgrade Bambu specifies. [1]
| Specification | P1S |
|---|---|
| Build volume | 256 x 256 x 256 mm; Bambu Studio default height 250 mm [1] |
| Speed / acceleration | Up to 500 mm/s; 20,000 mm/s² [1] |
| Hot end / bed | All-metal, up to 300°C / up to 100°C [1] |
| Stock nozzle | 0.4 mm stainless; 0.2, 0.6 and 0.8 mm options [1] |
| Enclosure | Enclosed, with activated-carbon filter [1] |
| Extruder | Direct drive [1] |
| Filaments | PLA, PETG, TPU, PVA, PET, ABS, ASA ideal; PA and PC capable [1] |
| Multicolor | AMS; up to 16 colors with four AMS units [1] |
| Camera | 1280 x 720 at 0.5 fps [1] |
| Body / recommended space | 389 x 389 x 458 mm / 500 x 500 x 950 mm [1] |
| Net weight / peak power | 12.95 kg / 350 W at 110 V [1] |
Maker figures carried forward from the cited comparison; not independent performance measurements. Maker specs take priority over Amazon fields.
Who it’s for, and who should skip it
Good fit if
Honest downsides
- The stock stainless nozzle is not the hardened setup recommended for fiber-filled materials. [1] [3]
- The 720p camera runs at 0.5 fps, not smooth video. [1]
- AMS multicolor requires additional hardware or the correct Combo. [1]
- The existing maker-source set does not establish maximum flow or screen specifications. [1]
What owners don’t like: evidence gap
No verified, dated product-specific review sample with a defensible denominator was supplied for this review. There is no “Y of X reviews” tally, failure percentage or claim of a recurring owner fault. Unfetched, rejected and partly verified owner claims have not been promoted to facts. This is a source-based buying guide, not a hands-on or long-term test.
Warranty and how to claim
The verified October 29 research confirms a 2-year warranty statement on the US P1S store and a general 2-year US consumer policy. However, the earlier comparison did not settle US coverage for an Amazon order. Confirm the exact seller and receipt eligibility with Bambu before assuming the same term; parts exclusions and purchase-channel eligibility need a model/order-specific check. [4] [5]
Before ordering, retain the exact model, seller name and receipt; ask the maker which coverage and claim route apply. This is buyer guidance, not a statement that every seller is authorized.
Maintenance and care
Use Bambu’s P1 manual/FAQ as the starting point. The supplied verified material does not establish a complete model-specific maintenance timetable, so this review does not invent lubrication intervals or turn partly verified owner reports into a service schedule. [6]
What else you’ll need
AMS or Combo
Buy the correct AMS configuration if multicolor is the goal. The base P1S does not become multicolor without it. [1]
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Other sizes and capability picks
More stock material capability
The P2S comparison lists a stock hardened nozzle and fiber-filled materials, along with a higher-frame-rate camera. Read P1S vs P2S. [3]
Is it better than the alternatives?
Use these live comparisons for the complete side-by-side specs and trade-offs.
All matchups: 3D printers comparisons
Buyer questions
Can the P1S print ABS or ASA?
Bambu lists both as ideal; the P1S is enclosed with an activated-carbon filter. [1]
Do I need AMS?
For the supported multicolor system, yes. The comparison lists up to 16 colors with four AMS units. [1]
Can I use carbon-fiber filament without changes?
Bambu does not recommend it without upgrading the hotend and extruder. [1]
Is the full 256 mm height the default?
No. The comparison records a Bambu Studio default of 250 mm, despite the nominal 256 mm height. [1]
Sources and unresolved checks
Where every figure comes from
- A1 vs P1S: existing maker-spec comparison, checked October 16, 2026; Amazon observations in the October 21 edition
- K1C vs P1S: existing maker-spec comparison, checked October 16, 2026
- P1S vs P2S: existing maker-spec comparison, checked October 16, 2026
- Bambu Lab US P1S store; verified October 29 research confirms build volume and the US store’s 2-year warranty statement
- Bambu Lab general warranty; verified October 29 review research, warranty claim 30
- Bambu Lab P1 FAQ; existing comparison and verified research maker source
No external research or fresh Amazon availability check was performed for this review. Dates above describe existing records, not a new verification. Inline references identify the record supporting each factual group.
Editorial gaps — resolve before treating these as confirmed
- Exact Amazon-versus-direct warranty eligibility and parts exclusions
- Maximum flow, screen and complete network/storage specs
- Model-specific maintenance intervals and accessory SKUs
- No verified dated review denominator or failure tally; qualitative owner reports not used