Elegoo Centauri Carbon

⚠️ SAFETY WARNING: The Centauri Carbon uses a heated nozzle (up to 320°C) and heated bed (up to 110°C). Never reach inside during operation. Allow parts to cool before removing.

⚠️ Do not open the front door or top cover during a print, especially with ABS/ASA — this releases fumes and disrupts chamber temperature.

The Elegoo Centauri Carbon is a fully enclosed CoreXY 3D printer and one of GRM's primary 3D printing workhorses (the shop runs five Gen 1 units). It ships nearly ready to print with full auto-calibration, a hardened steel nozzle, and an enclosed chamber, making it capable of everything from basic PLA to carbon-fiber-reinforced and engineering-grade filaments.

Specifications

Feature	Detail
Build Volume	256 × 256 × 256 mm
Motion System	CoreXY
Nozzle	0.4 mm, brass/hardened steel (60+ HRC)
Max Nozzle Temp	320°C
Max Bed Temp	110°C
Max Speed	500 mm/s
Acceleration	20,000 mm/s²
Extruder	Hardened steel dual-gear, 5.2 reduction ratio
Build Plate	Dual-sided flexible PEI (textured) / PLA cool plate (smooth)
Enclosure	Fully enclosed, ventilated with air filter
Leveling	Fully automatic (121-point, 4-strain-gauge)
Connectivity	Wi-Fi (dual-band LAN), USB drive

Overview

The Centauri Carbon is GRM's everyday high-performance FDM printer. The hardened steel nozzle and extruder handle abrasive filaments (carbon/glass-fiber) with no upgrade needed, and the enclosed chamber allows warp-prone materials like ABS and ASA. Note that it does not have an active chamber heater, so extremely temperature-sensitive materials like polycarbonate can be inconsistent despite the 320°C nozzle ceiling. A built-in chamber camera enables remote monitoring.

Software

Prepare files using Elegoo Slicer (recommended, based on Orca) or Orca Slicer, both of which include tuned profiles for the Centauri Carbon.

• Elegoo Slicer Download
• See Slicer Basics for GRM's general slicing guidance.

Getting files to the printer — two methods:

Method	How
Remote send (Wi-Fi/LAN)	In Elegoo Slicer, slice your file, then send the job directly to the printer over the network. The job appears on the printer's touchscreen for you to start.
USB drive	Export the sliced file to the included USB drive, plug it into the printer, and select the file from the touchscreen.

Startup

1. Power on the printer using the switch at the rear.
2. Load filament into the side-mounted spool holder; the run-out sensor will detect it.
3. Send your sliced file via remote send or USB drive (see Software above).
4. On the touchscreen, select the print job.
5. The printer runs auto-leveling and calibration before starting.
6. Monitor the first layer to confirm good bed adhesion.

Materials

Material	Status	Notes
PLA / PLA+	✅	Use the smooth PLA cool plate; open the door for better airflow.
PETG	✅	Good layer adhesion; use textured PEI side.
ABS / ASA	✅	Keep door and top cover closed for chamber heat; ensure ventilation.
TPU	✅	Dual-gear extruder handles flexibles well; print slower.
PLA-CF / PETG-CF / other CF	✅	Hardened nozzle is standard — no upgrade needed.
PA / PC (nylon, polycarbonate)	⚠️	Possible within thermal limits, but no active chamber heater — results can be inconsistent.
Filaments with unknown/no temp data	❌	Do not print without verified temperature settings.

Safety

• Do not open the enclosure during a print, especially with ABS/ASA — fumes and heat loss can occur.
• Never touch the nozzle or bed during or immediately after printing.
• Ensure the room is ventilated when printing high-temp materials — the built-in filter helps but does not replace ventilation.
• Keep the automated filament cutter and purge area clear of hands during operation.

Troubleshooting

Issue	Fix
Print not sticking	Clean the plate with IPA; re-run auto leveling; confirm you're using the correct plate side for the material.
Remote send fails	Confirm the printer and computer are on the same network; check Wi-Fi/LAN binding in the slicer.
Filament not loading	Cleanly cut the filament end; confirm the run-out sensor registers it; reload the spool.
Clogs/under-extrusion	Verify nozzle temp matches material; use the included unclogging pin; check for heat creep on long high-temp prints.
USB not reading	Reformat drive to FAT32; confirm files exported correctly from the slicer.
PC/nylon warping	Expected without an active chamber heater; use adhesion aids and keep the enclosure sealed.

Resources

• Elegoo Slicer Download
• Elegoo Centauri Carbon Product Page
• GRM Slicer Basics
• GRM 3D Printing Overview
• Equipment Status Page

Questions? Contact Josh Fennessy — josh@grandrivermakerspace.org