Elegoo Centauri Carbon to Bambu A1/H2 Series Hotend Adapter Kit Installation Instructions

Thank you for purchasing our Heat Block & Nozzle Conversion Kit for the Elegoo Centauri Carbon, enabling full compatibility with Bambu Labs A1 and H2 series quick‑change hotends. 

This product is a heavily modified derivative of the original design released by @Pedrinbeep as public domain on Reddit, and later published under a more restrictive license at https://makerworld.com/en/models/1993997 With his permission, we began from his original CAD model and re‑engineered the design extensively to improve dimensional accuracy when printed in PPA‑GF, enhance overall fitment, simplify installation, and streamline manufacturing. While the geometry is inspired by his concept, the final design reflects significant structural and functional changes exclusive to our version.  

The version sold through our Etsy Shop includes additional refinements and improvements not present in the free model we published on MakerWorld: https://makerworld.com/en/models/2342650 These enhancements are available exclusively from our Etsy shop: https://elegoo.3DCreationsofRI.shop 

Copyright © 2026 — 3D Creations of Rhode Island. All rights reserved.

🛡️ Fully Reversible — Does Not Void Your Warranty

No cutting, no soldering, no firmware changes, and no permanent modifications to your printer.

If you ever need warranty service, simply remove the adapter and reinstall your stock hotend — your machine is instantly back to factory‑original condition.

🔧 Important Installation Note — Reuse Your OEM Elegoo Heater & Thermistor

This kit now ships as a modular system. The Bambu‑style quick‑change heater block is included, and you will transfer your existing Elegoo heater cartridge and thermistor into the new block.

During development, we found that third‑party heater and thermistor assemblies can vary significantly in quality. By reusing the OEM components your printer was calibrated for, you maintain:

• Perfect electrical compatibility

• Stable, accurate temperature readings

• No firmware changes

• No mismatched sensor tables

• The full stock temperature capability

The transfer process is simple and takes only a few minutes.

🎥 Installation Video

The video below is Pedrinbeep’s original demonstration, showing the basic installation workflow.

Even though our adapter has been significantly improved, the installation process remains functionally identical.

🌡️ Why the Bracket Doesn’t Need to Be Metal

Our brackets are printed in annealed PPA‑GF, an engineering‑grade high‑temperature nylon reinforced with non‑conductive glass fiber.  After annealing, the material reaches a heat‑deflection temperature of at least 200 °C — far beyond anything the bracket experiences in real use.

Even though the hotend can reach 350 °C, the bracket never sees those temperatures because:

• A zirconia insulating block sits between the heater block and the bracket

• The bracket is mounted ~5 mm away from the heat source

• The hotend and part‑cooling fans constantly move air across the area

• The printer is not operating in a 90 °C heated chamber

Actual bracket temperatures:

• 70–110 °C during normal printing

• Up to ~120 °C during long enclosed prints

These temperatures are well below the at least 200 °C heat resistance of annealed PPA‑GF.

In short:  

A metal bracket simply isn’t necessary — PPA‑GF is engineered for this environment. It won’t soften, warp, or deform, and it avoids the vibration‑related cracking that thin aluminum adapters can experience.

🔁 Replacement Parts

If you ever break a thermistor wire or experience a collision that cracks the adapter bracket, you don’t need to buy a full kit again.

• Heater & Thermistor: Since the system uses the standard Elegoo heater and thermistor, you can purchase replacements directly from Elegoo.

• Heat Block: The heat block is a standard Bambu A1‑series heater block with a zirconia insulation block.

• Adapter Bracket: We offer replacement PPA‑GF brackets separately if you ever need one.