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Bambu Hotend for 2.85mm Filament (H3C)
A genuine Bambu Lab hotend designed for the H3C and its FlexFeed extrusion system, built specifically to handle 2.85 mm filament. Paired with Bambu Lab's dedicated 2.85 mm TPU, it prints filament as soft as 75A reliably at up to three times the flow rate of a traditional printer.
Available in 0.4 mm, 0.6 mm, and 0.8 mm nozzle sizes and rated to a maximum printing temperature of 350 °C.
Key Features
Built for 2.85 mm Filament
Works with 2.85 mm filament and the H3C's FlexFeed system, which switches between 1.75 mm and 2.85 mm filament on the fly.
Reliable Soft-TPU Printing
Thicker 2.85 mm TPU stays rigid under pressure, melts in greater volume, and pushes through with more force — so TPU as soft as 75A prints reliably at up to 3× the flow rate of a traditional printer.
Three Nozzle Sizes
Choose 0.4 mm for detail, 0.6 mm for a balance of speed and quality, or 0.8 mm for the fastest, highest-volume soft TPU prints.
Compatibility
Designed exclusively for the Bambu Lab H3C with the FlexFeed extruder.
The 2.85 mm hotend can print only 2.85 mm flexible filaments. Bambu Studio currently provides two presets for this hotend:
- Bambu TPU 75A (2.85 mm)
- Generic TPU (2.85 mm)
Standard 1.75 mm Bambu filaments (PLA, PETG, ABS, ASA, PC, carbon-fiber and glass-fiber composites, standard TPU, support materials, PVA, etc.) are not compatible with this hotend — use the standard 1.75 mm H3C hotends for those materials.
Filament Compatibility
| Filament | 0.4 mm | 0.6 mm | 0.8 mm |
|---|---|---|---|
| Bambu TPU 75A (2.85 mm) | ✓ | ✓ | ✓ |
| Generic TPU (2.85 mm) | ✓ | ✓ | ✓ |
| All 1.75 mm filaments (PLA, PETG, ABS, ASA, PC, CF/GF, TPU, PVA, supports) | — | — | — |
Installation
Installation follows Bambu Lab's standard H3C hotend swap procedure. Refer to the official Bambu Lab Wiki for step-by-step instructions and safety notes before removing or installing a hotend.
Product Specifications
Hotend
| Filament Diameter | 2.85 mm |
|---|---|
| Nozzle Size | 0.4 mm / 0.6 mm / 0.8 mm |
| Max. Printing Temperature | 350 °C |
| Length | 49.2 mm |
| Compatibility | Bambu Lab H3C |
Packaging
| Packaging Weight | 0.026 kg |
|---|---|
| Packaging Size | 60 × 60 × 30 mm |
What's in the Box
- Hotend for 2.85 mm filament
- 3 x M2 × 5 screw
- Toolhead motor unlock sleeve
