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Bambu Lab Hotend Series [For H3C]

Bambu Lab
$1,200 TWD
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Bambu Lab｜H3C Accessories

Bambu Lab H3C Hotend Series

Hardened steel, high-flow, and 2.85 mm diameter hotends meet the different needs of abrasive materials, high-efficiency printing, and flexible materials.

Choose the right H3C hotend based on your printing material and application needs to improve printing efficiency and usage flexibility.

Hardened Steel Hotend Abrasive materials｜Carbon fiber｜Glow-in-the-dark materials
High-Flow Hotend High-speed printing｜High-infill models｜Reduced print time
2.85 mm Diameter Hotend FlexFeed｜Flexible TPU｜Large-diameter filament

Hardened Steel Hotend｜H3C Exclusive

Designed specifically for abrasive materials, improving nozzle wear resistance and long-term usage stability.

Born for Highly Abrasive Filaments

Abrasive materials such as carbon fiber, glow-in-the-dark materials, and metal-filled filaments can accelerate the wear of standard brass nozzles, thereby affecting printing dimensional accuracy.

The Bambu Lab H3C Hardened Steel Hotend is made of hardened steel with a hardness exceeding HRC 55 and features an all-hardened design rather than just applying a hardened coating to the surface.

It helps reduce wear caused by abrasive materials, maintains the nozzle shape, and extends its service life.

Bambu Lab H3C Hardened Steel Hotend Abrasive Material Application
Bambu Lab H3C Hardened Steel Nozzle Structure and Wear-Resistant Design

Quick Hotend Replacement｜Removable with Three Screws

The H3C hotend features a convenient disassembly design, allowing hotend replacement by simply handling three fixing screws.

The original product description states that the replacement process can be completed in less than a minute, helping to reduce downtime for maintenance and material switching.

When printing abrasive materials, you can switch to the hardened steel hotend; after completion, switch to other hotends as needed.

Comparison of Different Nozzle Sizes

Different nozzle diameters are suitable for different printing needs. Smaller diameters are suitable for detailed models, while larger diameters are suitable for large parts and higher material extrusion requirements.

Comparison Item 0.2 mm 0.4 mm 0.6 mm 0.8 mm
Usage Positioning Detailed models, prioritize resolution Balance of speed and quality, suitable for daily use Higher extrusion, suitable for large parts Higher extrusion, suitable for large structural parts
Common Applications Miniatures, detailed logos, text, molds Toys, mechanical parts, decorations Large structural parts, household functional parts, engineering components Large structural parts, industrial components, high-strength models
Main Features Better detail rendering, printing time is usually longer Highly versatile, balancing quality and efficiency Can improve printing efficiency, relative decrease in precision Suitable for large-scale printing, relative decrease in precision

※ This table is an application comparison of different nozzle diameters and does not mean that all the above sizes have a corresponding H3C hardened steel hotend version; please refer to the product options for the actual sales specifications.

Bambu Lab Different Nozzle Diameter Printing Effect Comparison
Bambu Lab 0.2 0.4 0.6 0.8 mm Nozzle Application Comparison

Hardened Steel Hotend｜Product Includes

  • Hardened steel hotend × 1
  • M2 × 5 screws × 3
  • Toolhead motor unlocking socket × 1

High-Flow Hotend｜H3C Exclusive

Optimizes melting efficiency and material extrusion, suitable for large models, high infill, and high-speed printing needs.

Reduces print time by up to 30%

The Bambu Lab High-Flow Hotend features an optimized melting zone design. Under specified test conditions, the maximum volumetric flow rate increase can reach 62.5%, and the print time can be reduced by up to 30%.

For large or high-infill models, it can save more printing time. The actual improvement varies depending on the material, model, and printing parameters.

Maximum Volumetric Flow Rate Comparison

The following summarizes the standard flow and high-flow hotend data from the original product information, all units are mm³/s (cubic millimeters per second).

Hotend Specifications PLA Basic PLA Matte PETG HF
Standard Flow 0.4 mm 24 mm³/s 28 mm³/s 24 mm³/s
High-Flow 0.4 mm 40 mm³/s 48 mm³/s 32 mm³/s
High-Flow 0.6 mm 40 mm³/s 40 mm³/s 40 mm³/s
High-Flow 0.8 mm 40 mm³/s 40 mm³/s 40 mm³/s

※ Data is compiled based on the original provided data, and the volumetric flow rate units have been standardized to mm³/s. Actual performance is affected by material, temperature, model, and printing settings.

Bambu Lab H3C High-Flow Hotend Melting and Extrusion Performance
Bambu Lab H3C Standard and High-Flow Hotend Performance Comparison

High-Speed Printing with Clear Details

The high-flow hotend not only pursues higher material extrusion speed but also focuses on extrusion stability.

Through efficient and stable melting and extrusion, it helps reduce under-extrusion, surface roughness, and detail loss during high-speed printing, improving edges, textures, and surface quality.

Bambu Lab H3C High-Flow Hotend High-Speed Printing Detail Display
Bambu Lab H3C High-Flow Hotend Printing Surface Quality

Test Conditions Description:

  • Volumetric Flow Rate Test: Uses ABS material, a 240 mm diameter single-wall cylinder, 0.2 mm layer height, 1.0 mm outer wall thickness, 280°C nozzle temperature, and enables the spiral vase mode.
  • Print Time Test: Uses PLA Basic material, 15% infill, and a 300 × 300 × 300 mm cube.

High-Flow Hotend｜Product Includes

  • High-flow hotend × 1
  • M2 × 5 screws × 3
  • Toolhead motor unlocking socket × 1

2.85 mm Diameter Hotend｜H3C Exclusive

Paired with the FlexFeed system, it meets the printing needs of flexible TPU and different diameter filaments.

Supports 2.85 mm Filament and FlexFeed System

Flexible TPU can easily bend or fold due to the softness of the material in traditional extrusion systems, so the printing speed usually needs to be reduced to maintain feeding stability.

The FlexFeed system can handle two filament specifications, 1.75 mm and 2.85 mm, and supports switching between them.

Paired with the dedicated 2.85 mm TPU filament, it can improve the feeding performance of flexible filament in the extrusion path, increasing the melting volume and extrusion capability.

Softness up to 75A, Print Speed up to 3 Times Faster

According to the original product description, paired with FlexFeed and dedicated 2.85 mm TPU filament, it can print TPU with hardness as low as 75A, and achieve up to 3 times the speed of traditional printers under specific conditions.

Actual printing speed and stability still depend on TPU material characteristics, hotend configuration, and printing parameters.

Bambu Lab H3C 2.85 mm Diameter Hotend and FlexFeed System
Bambu Lab H3C FlexFeed Flexible TPU Printing Application

2.85 mm Diameter Hotend｜Product Includes

  • 2.85 mm diameter hotend × 1
  • M2 × 5 screws × 3
  • Toolhead motor unlocking socket × 1

Filament Compatibility and Hotend Installation Guide

Before purchasing, please confirm the H3C hotend specifications, nozzle size, and compatibility with the materials you use. For hotend installation and replacement, please refer to the official Bambu Lab Wiki.

View Filament Compatibility Guide View H3C Hotend Installation Instructions