Open Box Bambu Lab H2S Combo 3D Printer and AMS 2 Pro

Open Box Bambu Lab H2S

The Bambu Lab H2S is a professional-grade 3D printer and laser cutter. The H2S provides a massive 340×320×340 mm³ print volume, a multi-color 3D printing system, and a closed-loop servo motor extruder. It also offers an optional 10W laser and cutting module, 5μm resolution optical motion calibration, a 350°C nozzle, and a 65°C active chamber heating system. The H2S is packed with features, including a full filament path AI detection system, and operates within a voltage range of 100-120 V.

Product Features

• 340×320×340 mm³ Print Volume
• Multi-color 3D Printing
• Closed-loop Servo Motor Extruder
• Optional 10W Laser and Cutting Module
• 5μm Resolution Optical Motion Calibration
• 350°C Nozzle & 65°C Active Chamber Heating
• Full Filament Path AI Detection
• Voltage Range: 100-120 V

Highlights

• AI Detection: 23 Sensors & 3 Cameras
• Motion Accuracy: < 50 μm
• Active Heated Chamber: 65 °C
• Large Volume: 340×320×340 mm³
• Faster Print Speed: Up to 30%
• Laser Cutting: 10W 455nm
• Filament System: Auto Venting, Filament Drying

Accuracy That Works for You

Correct Mechanical Deviations

Even the printer comes out of the factory with superb accuracy, mechanical wear and variances over time are inevitable—but now, first time in the industry, there’s a solution. With the Vision Encoder (¹), the H2S achieves distance-independent motion accuracy under 50 μm—thinner than a human hair. During calibration, it automatically compensates for mechanical drift, ensuring consistent precision and peak performance over time.

One Print. Perfect Fit.

Bambu Lab’s Auto Hole/Contour Compensation (²) minimizes printing tolerances, delivering machine-shop-level precision for hole dimensions. Design fit-critical parts with confidence—integrate shafts, bearings, and fasteners without trial and error. Post-print assembly has never been easier.

Ready for Engineering Filaments

Featuring a 350 °C hotend and a 65 °C actively heated chamber, it supports the entire Bambu filament lineup—from PLA and PETG to PC and PPA. With closed-loop fan control and precise thermal management, the H2S minimizes warping and deformation while improving layer adhesion. Build large, high-performance parts that are as functional as they are strong.

Even Surfaces, Crisp Edges

H2S uses both the sensing capability of its servo motor on the extruder and the high-resolution eddy current sensors on the nozzle to precisely control extrusion by measuring nozzle pressure and calibrating PA parameters for each filament, improving surface smoothness and edge sharpness.

Precision in Motion

Active Vibration Compensation neutralizes micro-vibrations and resonance in real time, enabling premium print quality at higher speeds.

Intelligence That’s Got Your Back

20,000 Checks Per Second
Closed-Loop Feedback, Real-Time Control

Bambu Lab’s proprietary PMSM servo system enables 20 kHz resistance and position sampling to dynamically modulate electromagnetic torque vectors. It stabilizes extrusion and actively detects grinding (³) or clogs in real time.

23 Sensors + 3 Cameras
Each Potential Risk Has Its Own Detector

Vision System

With AI-driven real-time monitoring, the vision system detects clumping, spaghetti and purge chute jamming as they happen, helping prevent failed prints before they start. This same vision system powers advanced features like Live Spatial Alignment, allowing precise laser and cutting calibration, and Vision Encoder technology, which enhances positional accuracy.

Feeding

Filament-path sensors work in unison to monitor feeding speed and position, detect filament tangles and grinding risks, track filament mileage and spool usage, and ensure tool readiness across the AMS, buffer, cutter, and feeding paths, making sure every tool is in place and every move is under control.

Thermal Control

Five NTC temperature sensors are strategically placed across the nozzle, heatbed, and chamber. Paired with integrated airflow sensors, the system actively monitors and adjusts internal temperatures and circulation, maintaining the ideal print environment through real-time feedback control.

Safety

The H2S features five flame sensors, front-door and top-cover sensors, and emergency stop button to form a complete safety system. It detects fire risks, monitors enclosure alignment, and allows instant shutdown when needed—protecting your projects and your workspace at all times.

Pre-Flight Checklist by AI

Prior to each operational cycle, the H2S vision system initiates a comprehensive pre-flight checklist: Chamber Integrity Scan – Detects debris across the entire print surface. Hardware Configuration Audit – Instantly identifies build plate properties.

Flap Switch Airflow & Filtration System

3D Printing & Laser Cutting. 3 Modes, All-in-One

High-Temp Printing

Chamber sealed. Internal air recirculates through the Air Filter and the heater to stabilize high-temp conditions. Print large engineering parts without warping.

Low-Temp Printing

Top Vent opens to bring in cool air, while maintaining a filtered exhaust (⁴). Print PLA and PETG without opening the door, and handle overhangs and bridging with ease.

Laser Cutting/Engraving

Top Vent and Filter Switch Flap open. Fumes are channeled efficiently to the ventilation system, keeping your workspace safe and clean.

Bigger. Faster. Better.

Maximum Volume. Maximum Productivity.

With a build volume of 340×320×340 mm³, the H2S offers the largest print space among all Bambu Lab printers. Your Vision. Fully Realized in One Print. 120% Larger Build Volume Than the X1 Carbon

Top Speed. More Reliable Than Ever.

Bambu Lab’s proprietary PMSM (⁵) servo extrusion system delivers 67% more extrusion force, providing solid support to high flow (⁶) printing. Paired with up to 1000 mm/s toolhead speed and up to 20,000 mm/s² acceleration, your H2S can finally go full throttle—cutting your printing time by up to 30% (⁷)—while maintaining top-tier quality.

DynaSense Extruder

PMSM servo extruder delivers up to 10kg of extrusion force—67% more than regular stepper motors, delivering the strongest support for high-flow printing.

Cut. Engrave. Draw.

Compact. Capable. All in One.

Live Spatial Alignment

Top-down BirdsEye camera (⁸) and onboard toolhead camera enable Live Spatial Alignment, letting you preview the toolpath directly on your material with 0.3 mm accuracy. What you see is what you get.

Auto Arrangement

Bambu Suite automatically arranges your project shapes to make the most of every sheet—smart, efficient, and effortless.

10W 455nm Laser Power

Slice through up to 5 mm plywood, acrylic, or PU with ease—clean, fast, and precise.

Air Assist

Air Assist keeps your lines crisp by blowing away smoke and char while cooling the surface—preventing soot buildup and beam distortion for sharp, clean results.

Digital Cutting

Effortlessly cut through paper, vinyl, PU leatherette, and more—clean, accurate, and ready to apply.

Drawing

Use the drawing module to automate linework, sketches, or handwritten notes—precise, repeatable, and hands-free.

Protected Inside and Out

Safety, Built In

Laser Safety Window (Laser Edition Only)

Shields your eyes from the 455 nm laser beam while keeping your workspace clear and visible.

Five Flame Sensors

Advanced sensors continuously monitor for fire risks. If an issue is detected, a loud buzzer and mobile alert⁹ notify you immediately—so you can act fast and stay safe.

Flame-Retardant Chamber

Constructed with fire-resistant materials throughout, the chamber provides passive protection for added safety.

Emergency Stop

Immediately halt operations if something feels off—giving you full control and added peace of mind.

Connectivity, By All Means.Privacy, By Design.

The H2S offers seamless cloud connectivity for convenient remote control from any device. For security-sensitive applications, it also delivers complete offline functionality, ensuring physically isolated operation. Users can control the printer, send files, and upgrade firmware—no internet required. Additionally, Developer Mode unlocks MQTT port access, empowering developers and integrators to connect third-party components and custom software with ease. (¹⁰)

Accessible. Comfortable. Made to Last.

Quick-Swap Nozzle

Swap nozzles in seconds—no tools, no hassle. Whether you're switching materials or upgrading to a different nozzle size, the re-engineered hotend makes it easy and intuitive, even for first-time users.

Quiet by Design

With Active Motor Noise Canceling and specialized air duct noise-reduction technology, the H2S operates below 50 dB (¹¹). Print overnight or in shared spaces without disrupting your environment.

All-Metal, Die-Cast Body

The integrated die-cast aluminum alloy chassis delivers a sturdy, stable structure that provides a rigid foundation for high-speed, large-format printing, while minimizing accuracy loss caused by micro-twisting.

Multi-Color Printing and Drying, All-in-One with AMS 2 Pro and AMS HT

Electro-Magnetic Air Vent

Automated venting facilitates dehumidification during drying and airtight sealing for weeks of quality printing.

Auto-Rotate Drying

During the drying process, the filament spools rotate automatically to provide more even drying.

RFID Sync

AMS 2 Pro uses RFID to auto-match drying settings for Bambu official filaments, no manual input needed.

Product Disclaimers

1. Vision Encoder: Vision Encoder needs to be purchased separately on the Bambu Lab Store.

2. Auto Hole/Contour Compensation: Auto Hole/Contour Compensation must be enabled in Bambu Studio and requires the use of designated Bambu filaments.

3. Filament grinding detection on the DynaSense Extruder may vary depending on filament type.

4. Filter Mode for low-temperature printing is optional and will be available in Q4 2025.

5. Permanent Magnet Brush-less Servo Motor

6. High Flow Hotend are optional equipment and can be purchased from the official store.

7. When using Bambu Lab PLA Basic to print a 200×200×200 mm cube with 15% infill, the printing time can be reduced by up to 30% compared to Bambu Lab X1C. Actual time savings may vary due to individual product differences, user habits, and environmental conditions. Please refer to actual usage for reference.

8. The laser and digital cutting functions are all controlled and visualized through Bambu Suite. Live Spatial Alignment is enabled by the BirdsEye Camera. The BirdsEye Camera comes standard with the H2S Laser Edition, or can be added via the Laser Upgrade Kit.

9. Push notifications require the use of Bambu Handy and cloud connectivity.

10. Due to safety protocol, Developer mode cannot be enabled when using Laser and Cutting functions.

11. Background noise: 40 dB; Test distance: 1 m

12. The go-kart frame shown in the picture is merely a component of the complete vehicle. Its usability and durability are limited by the overall design and construction of the vehicle. It cannot be used on the road until permission is obtained from the local relevant authorities. When conducting any operations, please strictly abide by the applicable local laws, regulations and safety standards to avoid risks or damages.

13. Creator projects are provided for illustrative purposes only. Bambu Lab does not endorse, and disclaims any representations or warranties regarding creator projects, including, without limitation, the safety, marketability, or usability of any 3D printed works based on such projects. See our Terms of Service for more information.

14. Ensure that a person must be present at all times to closely monitor the machine during laser engraving and cutting operations. Do not open the laser safety window while the machine is operating. The laser process should only be observed through the designated laser safety window. Individuals with medical conditions or sensitivities (e.g., to strong light or smoke) must strictly follow professional medical advice before operating or approaching the machine. For safety instructions regarding laser use, refer to the Laser Module Safety Guidelines Wiki and the Laser Safety Document.

15. All product data for the H2S, such as PMSM extrusion force improvement and model print times, is based on Bambu Lab’s internal testing. Actual results may vary due to individual product differences, user habits, and environmental conditions. Please refer to actual usage for reference.