Bambu Lab H3C: The Ultimate Multi-Head 3D Printing Experience
Enter a new era of multi-head 3D printing. With nine heads that switch at high speed and the ability to print in multiple colors and materials, create complex projects more efficiently than ever.
The H3C, Bambu Lab's third-generation flagship model, features the Swaptek™ high-speed multi-head switching system. Combining independent print heads, active preheating, automatic filament feeding with AMS 3H, and high-performance motion control, it delivers a new multi-material printing experience.
Swaptek™ High-Speed Multi-Head Switching System
Switch heads, change materials, and resume printing in as little as 6 seconds
The H3C comes standard with nine interchangeable print heads, each equipped with an independent filament feeding, heating, and control system.
Because filament can remain loaded in each print head, there is no need to repeatedly load and unload it with every switch, reducing wait times for multi-material prints.
With an optimized mechanical structure, active preheating, and refined control parameters, the H3C can switch heads in as little as 3.4 seconds and switch between two types of filament in as little as 6 seconds.
Active preheating: Reduce wait times when switching materials
Traditional multi-head printing systems typically begin heating the next nozzle only after the head swap is complete.
The H3C heats ahead of time. While the current print head is working, it preheats the next one, reducing the temperature wait after switching.
Layered Color Printing: Rich Colors from Five Base Colors
In multicolor 3D printing, repeated filament retraction, material changes, and purging can often reduce efficiency.
With its high-speed multi-head switching system, the H3C keeps different materials in separate print heads, reducing the wait times and filament waste associated with conventional material changes.
Combined with layered color printing, it creates a wide range of colors from five base colors, expanding the creative possibilities for multicolor models.
Variable-Diameter Filament Extruder: Improved Printing with Ultra-Soft TPU
Compatible with 1.75 mm and 2.85 mm filament diameters
Because ultra-soft TPU is flexible, feeding can become unstable during printing, or print speed may be limited.
To improve TPU 75A printing performance, Bambu Lab increased the diameter of compatible filament to 2.85 mm, improving feeding stability and flow during printing.
The H3C features a variable-diameter filament extruder. Driven by a permanent-magnet synchronous motor, its cam mechanism automatically accommodates 1.75 mm and 2.85 mm filament, depending on the print head configuration.
According to the product materials provided, TPU 75A can be printed at more than three times the speed of other TPU under the comparison conditions. Actual performance varies depending on the material, model, and print settings.
Combine Different Nozzle Diameters in a Single Print
Balance fine detail, speed, and flexible-material compatibility
With conventional 3D printing, you sometimes have to choose between fine surface detail and print speed.
The H3C lets you combine nozzles of different diameters in the same project. For example, you can use them as follows:
0.2 mm fine-detail nozzle
Ideal for producing parts that require fine surface details, such as a watch dial.
0.4 mm standard nozzle
Suitable for printing larger structures such as a watch case, balancing print speed and strength.
0.4 mm TPU nozzle
Ideal for printing elastic parts such as a flexible watch band.
Print path planning for multiple nozzle diameters
Bambu Studio lets you configure the print path and layer height for each nozzle, giving you more flexibility when combining them.
Movable Head Rack: Precise Connections and a Clear View of the Print Area
The H3C's head-changing rack features a lift-up design.
During a head swap, it helps precisely align the tool head with the standby print head. During printing, it rises out of the way to keep the print area clear and make it easier to monitor your work.
Automatically Switch Processing Modes: More Than Just 3D Printing
In addition to swapping print heads, the H3C's high-speed multi-head switching system can support a variety of creative workflows when paired with compatible flatbed processing tool kits.
For example, you can use a cutting head or pen for flatbed processing, depending on the compatible accessories and software features.
Unused tools can remain on the rack, reducing the need to frequently remove and install them and making it easier to integrate different processing methods into the same workflow.
Cutting, pen plotting, and some flatbed processing functions require separately purchased compatible upgrade kits. They are not all included in the standard package.
AMS 3H Automatic Filament Feeding System
For multicolor and multi-material printing, with moisture protection
The new AMS 3H is designed for the H3C's high-speed multi-head switching system, combining automatic loading, individual moisture-protected storage, and two-chamber drying.
Load compatible filament into a slot, and the system automatically identifies information for compatible genuine Bambu Lab filament and completes loading.
Each spool is stored in its own sealed compartment, helping protect filament quality from ambient moisture.
Automatic filament loading
Simply insert compatible filament into an AMS 3H slot. The system identifies and loads it, making it easier to manage multiple materials.
Two drying slots: up to 85°C
The AMS 3H comes standard with two drying slots, with a maximum drying temperature of 85°C.
It supports printing while drying and is suitable for PA, PC, and some fiber-reinforced filaments that require moisture control.
Combining drying and feeding can help reduce stringing, bubbles, and print-quality issues caused by moisture absorption.
Supports connecting additional AMS units
With a compatible T1 print head and connection configuration, the H3C can connect up to four AMS units in parallel and support printing in up to 24 colors.
You can expand your multicolor and multi-material setup to suit your needs. Actual compatibility should be verified based on the AMS model, connection method, and firmware compatibility.
Integrated Design: A Neat Multi-Material Workspace
The H3C integrates the multi-head printing system and automatic feeder, reducing exposed external spools and complicated cabling.
It makes it easier to create a tidy setup, whether in a professional workshop or a creator's personal workspace.
Print Quality: Comprehensive Improvements to Speed, Precision, and Cooling
In addition to multi-head printing, the H3C features improvements to motion control, the cooling system, and printing performance with engineering materials.
Comprehensively upgraded motion control system
The H3C's tool head and X-axis assembly are approximately 40% lighter, helping reduce inertia and improve control during high-speed motion.
According to the specifications provided, the H3C has a maximum travel speed of 1,400 mm/s and a maximum acceleration of 25,000 mm/s².
These figures indicate the machine's motion capabilities; they do not mean every model can be printed at maximum speed. Actual speed depends on the material, model geometry, and quality settings.
Vision Encoder Plate: 50 μm motion accuracy
Using the Vision Encoder Plate, the H3C can calibrate motion accuracy and compensate for motion drift that accumulates over long-term use.
According to the materials provided, it can keep the applicable motion error within 50 μm.
The Vision Encoder Plate is optional and must be purchased separately.
Cooling system with multiple airflow streams
The H3C integrates multiple fans to manage cooling for a range of printing conditions.
- Part cooling fan: Helps cool the print area quickly.
- Left and right auxiliary cooling fans: Improve cooling for overhangs and bridges.
- Chamber exhaust fan: Helps regulate chamber temperature when printing materials such as PLA and PETG.
- Print head rack cooling fan: Helps reduce the effects of heat transfer when preheating standby print heads.
350°C High-Temperature Hotend and 65°C Active Chamber Heating
Compatible with a wider range of engineering 3D printing materials
The H3C's print heads feature hardened steel nozzles, and the hotend can reach a maximum temperature of 350°C.
ABS, PC, PA-CF, PET-CF, and other engineering filaments can be used with the appropriate material settings.
The two-zone active chamber heating system can heat the printing environment to up to 65°C. It helps reduce warping and deformation in some engineering materials and can improve layer adhesion.
Fully Automatic Calibration: Simplify Setup for Multi-Head Printing
The H3C automatically calibrates tool positions, compensates for nozzle offsets, and levels the heatbed.
Even with complex models using multiple print heads, automatic calibration can reduce the effort required for manual setup and alignment.
AI Monitoring: Keep Track of Print Progress
The H3C combines a live-view camera, tool head camera, and overhead camera to help monitor the printing process.
Before printing, it checks the machine's status. During printing, it helps detect issues such as spaghetti failures, blocked extrusion paths, and clogged nozzles.
AI monitoring can help reduce the risk of some print failures, but it does not fully replace user inspections or safety precautions.
The overhead camera must be purchased separately.
New HMS Health Management System
The H3C features the new HMS Health Management System. It provides diagnostic information for machine errors and prioritizes possible causes.
The built-in MiniWiki troubleshooting guide takes you step by step through checking and resolving issues.
Genuine Bambu Lab H3C Expansion Accessories
In addition to multi-head printing and the automatic feeding system, genuine accessories can further improve storage, the workspace, and ease of use around the H3C.
Bambu Lab Workstation L
The Workstation L provides a dedicated space for your machine and makes it easier to change materials, maintain the machine, and check on prints while standing.
It can also store frequently used tools and filament together, helping keep your workspace tidy.
Bambu Lab E1 Air Purifier
The E1 Air Purifier can be added to the H3C workspace as an air filtration device.
Designed to connect to the printer, it features three-stage filtration.
- The pre-filter layer captures relatively large particles.
- The high-performance filter layer helps filter fine particles.
- The 40 mm activated carbon layer helps adsorb some odors and gaseous pollutants.
An air purifier is not a substitute for proper indoor ventilation or exhaust measures. When printing engineering materials, consult the material safety information to determine the ventilation and protective measures required.
Bambu Lab H3C Key Technical Specifications
| Specification | Bambu Lab H3C |
|---|---|
| Printing technology | FDM／FFF |
| Multi-head system | Swaptek™ nine-head high-speed switching |
| Maximum build volume | 330 × 320 × 325 mm |
| Machine dimensions | 493 × 571 × 587 mm |
| Overall dimensions, including AMS 3H | 493 × 571 × 1016 mm |
| Machine weight, including AMS 3H | 36.28 kg |
| Maximum hotend temperature | 350°C |
| Maximum chamber temperature with active heating | 65°C |
| Maximum travel speed | 1,400 mm/s |
| Maximum acceleration | 25,000 mm/s² |
| Compatible filament diameters | 1.75 mm／2.85 mm (depending on print head) |
| Number of AMS 3H drying slots | 2 |
| Maximum AMS 3H drying temperature | 85°C |
| AMS expansion | Up to 4 units (depending on compatible configuration) |
| Maximum number of print colors | 24 colors (with expanded configuration) |
Bambu Lab H3C Frequently Asked Questions (FAQ)
1. What are the dimensions, weight, and build volume of the standard H3C package?
The H3C package measures 600 × 630 × 700 mm and weighs 36.8 kg.
The AMS 3H package measures 550 × 615 × 500 mm and weighs 11.9 kg.
Once unpacked, the H3C measures 493 × 571 × 587 mm, and the AMS 3H measures 480 × 562 × 460 mm.
When installed together, the overall dimensions are 493 × 571 × 1016 mm, and the machine weighs approximately 36.28 kg, including the AMS 3H.
The maximum build volume is 330 × 320 × 325 mm.
2. How much space is needed for the standard H3C package?
We recommend allowing at least 593 × 1056 × 1306 mm of space and placing the machine on a stable floor or low stand.
- Front: 385 mm, to open and close the front door without obstruction.
- Left and right: 50 mm on each side, for removing the AMS side panels and performing maintenance.
- Rear: 100 mm, for the power cable and heat dissipation.
- Above: 290 mm, to open the AMS lid without obstruction.
3. How much space is needed when pairing the H3C with the Bambu Lab Workstation L?
When paired with the Workstation L, we recommend allowing at least 593 × 1056 × 1900 mm of space for convenient daily operation, maintenance, and opening the lids.
4. Which accessories are worth adding when purchasing the H3C?
The standard package includes items such as a print head for 2.85 mm filament and a textured PEI build plate.
Depending on your needs, you can purchase the following separately:
- Nine-color printing with minimal material waste: Purchase an additional 1.75 mm print head to replace the existing Head 8.
- Flatbed processing: Flatbed processing upgrade kit.
- Cutting: Precision fine-point blade set and cutting mat.
- Pen plotting: Pen head set and cutting mat.
- Image-based positioning for flatbed processing: Overhead camera.
5. How is Swaptek™ different from other head-changing systems?
The key differences of the Swaptek™ high-speed multi-head switching system include:
Independent power supply and active temperature control
Each print head has an independent power supply and data connection and can be preheated before switching. A contact sensor also monitors nozzle temperature.
An extruder that controls filament gripping
The cam mechanism is driven by a PMSM motor and actively adjusts the gripping state according to the filament diameter, enhancing supply stability.
Retractable Rack
Adjusting the rack position helps ensure the print head is accurately connected. It rises during printing to reduce interference with the working area.
6. What is the hardness of H3C's hardened steel nozzle?
H3C hotend nozzles are made of hardened steel with a hardness of HRC 55+.
This enhances durability against materials prone to wear, such as carbon fiber-reinforced, glass fiber-reinforced, and glow-in-the-dark filaments.
7. How do the 1.75mm and 2.85mm print heads differ?
The two print heads cannot be mixed arbitrarily because their bases, filament supply structures, hotends, and cutter assemblies differ.
Print Head Base
The 1.75mm print head supplies filament from the top and features a release button for the PTFE tube.
The 2.85mm print head houses the tube in a side groove. When printing compatible flexible materials, the filament can be supplied directly from the top.
In this case, the tube also supports the tool head wiring, so do not remove it.
Hotend
The two hotends have different filament inlet diameters, and mixing them may cause supply issues.
Cutter Assembly
The angles of the print head blade and blade holder differ depending on the filament diameter, so use the parts with the corresponding specifications.
8. Does the H3C come with a 2.85mm print head as standard at shipping?
Yes. The H3C comes pre-equipped with a print head for 2.85mm filament at position 8 of the rack.
This configuration allows you to immediately start printing compatible flexible materials and can be used in combination with drying in the AMS 3H.
9. Can only TPU be printed with the 2.85mm print head?
According to currently available materials, the 2.85mm print head is for compatible 2.85mm flexible filaments.
Bambu Studio includes compatible material presets such as Bambu TPU 75A (2.85mm) and Generic TPU (2.85mm).
10. Will there be more 2.85mm flexible materials in the future?
According to the provided product information, Bambu Lab continues to develop flexible materials in the 2.85mm standard to expand the applications of the variable filament diameter extruder.
For the actual release date, material types, and compatibility, please check the manufacturer's latest information.
Bambu Lab H3C Warranty and Repair
When purchasing Bambu Lab related equipment, 3DMart offers a 1-year standard warranty or an eligible extended warranty plan.
For the actual warranty period, applicable conditions, and scope of service, please check the details of your purchase and 3DMart's latest warranty terms.
Extended Warranty Service Plan
Depending on the eligible plan, the following services may be included.
- Free round-trip shipping for the equipment.
- Free inspection fee.
- Free repair costs within the scope of coverage.
- 3DMart arranges the pickup of the equipment and arranges the return after repair by an engineer.
Note on purchasing an extended warranty plan:Under the original sales terms, additional purchase of an extended warranty plan is not accepted after the equipment has shipped. Please check the required plan at the time of ordering.
Before applying for repair
- If there is an abnormality with the equipment, please contact us first via the contact page.
- When shipping the item for repair, please use the original packaging materials, including the outer box and protective foam.
- Depending on the repair content, please also include necessary genuine accessories, power adapters, connection cables, and related materials.
- Damage caused by user negligence, damage due to modification, and consumables may not be covered by the warranty.
- 3DMart will provide a separate quote for operation training services.
For applying for repair, please check 3DMart's repair application page.
For questions about operation or purchasing, please contact us by email at client@3dmart.co.jp.
Power usage precautions: When using the AMS 2 Pro, please use the corresponding genuine power adapter according to the manufacturer's instructions and avoid using incompatible third-party power equipment.