For the largest Bambu Lab build volume
Bambu Lab H2S
An enclosed single-nozzle FDM printer with a build volume of 340 × 320 × 340 mm, the largest in Bambu Lab's lineup per the manufacturer.
In short The Bambu Lab H2S is an enclosed filament (FDM) 3D printer with a 340 × 320 × 340 mm (13.4 × 12.6 × 13.4 in) build volume. Bambu Lab claims a 1,000 mm/s top speed, a 350 °C (662 °F) nozzle and active chamber heating to 65 °C (149 °F); the printer measures 492 × 514 × 626 mm (19.4 × 20.2 × 24.6 in) and weighs 30 kg (66.1 lb).
Documentary analysis · Not personally tested
FDM · EnclosedWhy consider it?
The largest build volume in Bambu Lab's lineup per the manufacturer, inside an actively heated chamber suited to technical materials.
What to verify
The AMS 2 Pro is not included on the base unit; check precisely whether a listing is the standalone machine or the AMS Combo.
Bambu Lab H2S specifications
- Technology
- Filament (FDM)
- Build volume
- 340 × 320 × 340 mm (13.4 × 12.6 × 13.4 in)
- Printer dimensions
- 492 × 514 × 626 mm (19.4 × 20.2 × 24.6 in)
- Weight
- 30 kg (66.1 lb)
- Enclosure
- Enclosed, active heating up to 65 °C (149 °F)
- Claimed top speed
- 1,000 mm/s
- Claimed acceleration
- 20,000 mm/s²
- Max nozzle temperature
- 350 °C (662 °F)
- Max bed temperature
- 120 °C (248 °F)
- Multicolor
- Compatible with the AMS 2 Pro for multicolor printing, sold separately or bundled in a Combo.
- Materials
- PLA, PETG, ABS, ASA, PC, and PA per Bambu Lab, with a hotend up to 350°C and a chamber actively heated to 65°C.
- Screen
- 5-inch touchscreen
- Built-in camera
- Yes
- Connectivity
- Wi-Fi, USB
- Listed features
- Filament runout sensor, filament cutter, built-in air filtration
How much space does it need?
The Bambu Lab H2S measures 492 × 514 × 626 mm (19.4 × 20.2 × 24.6 in) for a 340 × 320 × 340 mm (13.4 × 12.6 × 13.4 in) build volume: the dashed box is the printer, the solid cube the largest theoretical part, about 23% of the machine’s volume. Add room for the spool or multicolor unit, cables and ventilation.
Source: official Bambu Lab pages (bambulab.com), checked September 28, 2026. Manufacturer claims, not our measurements. Build volume is nominal: orientation, supports and reserved zones can reduce the usable space.
Compare the Bambu Lab H2S
Which projects is it for?
The H2S is a single-nozzle FDM printer with a build volume of 340 × 320 × 340 mm, presented by Bambu Lab as the largest in its lineup. That format targets bulky single-piece parts: printed furniture, large shells, or oversized brackets that would not fit a more typical 256 mm format.
The enclosed, actively heated chamber sets the H2S apart from a simple large open plate: it targets thermal stability as much as sheer volume, which matters more on large technical-material parts that warp more easily over a wide surface.
Materials and setup
Bambu Lab lists compatibility with PLA, PETG, ABS, ASA, PC, and PA thanks to a hotend reaching up to 350°C and a chamber actively heated to 65°C. That combination targets materials that shrink or crack while cooling, a bigger risk on a large build volume.
The machine prints one material or color at a time with no extra accessory; advanced multicolor printing requires adding the AMS 2 Pro, whose inclusion should be checked precisely depending on the chosen bundle.
What the bundle includes or not
Per Bambu Lab's listing, the base H2S includes the printer, a textured PEI build plate, a spool holder, an accessory box, and a safety key, with no AMS 2 Pro or laser: both are offered as separate bundles.
Before buying, compare the spec sheet and the exact contents of the chosen listing (standalone machine or AMS Combo) rather than relying on the product photo alone. Warranty terms and after-sales support can also differ between the official store and a third-party retailer, worth checking before comparing two listings.
Alternatives to compare
For the same actively heated chamber plus an optional laser module, the dual-nozzle H2D is the most direct comparison. The Bambu Lab page places the H2S within the rest of the manufacturer's lineup.
For a more compact and less expensive machine at a more modest volume, the P1S shares the same enclosed-chassis logic without targeting the same build volume.
Similar printers to compare
Sources and limits
- Source: official Bambu Lab pages (bambulab.com), checked September 28, 2026. Manufacturer claims, not our measurements.
- How we assess specifications
We have not measured noise, real printing speed, accuracy or reliability, so none of these is rated here.