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Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 1
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 2
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 3
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 4
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 5
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 6
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 7
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 8
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 9
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 10
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Image 11
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Thumbnail 1
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Thumbnail 2
Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Thumbnail 3
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Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Thumbnail 5
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Voron Stealthburner Rapido HF - Maximized Airflow Mod 3D Printer File Thumbnail 11

Voron Stealthburner Rapido HF - Maximized Airflow Mod

freakyDude avatarfreakyDude

June 3, 2026

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Description

After many hours of analysis, rebuilding, simulation, and testing, my modified StealthBurner for the Rapido 2 High Flow Hotend is finally here! 

I modified the air ducts, the mount for the Rapido HF hotend, and the Stealthburner front so that the component cooler airflow now reaches the printed part without turbulence. 
To achieve this, the front, back, and Stealthburner have been redesigned from scratch. They are compatible with Stealthburner extruders (here the Clockwork2). However, due to the modular Stealthburner design, it should also be compatible with all other suitable extruders.

I have attached two screenshots of the airflow simulation results, as well as a picture of my before/after tests with Shuriken. They were done with the same G-code and filament. I took pictures of a 3-second layer time print, which was right after the overhangs were clearly visible. 

The printing and assembly process is similar to that of the original Stealthburner and the Rapido HF Hotend. Be careful when installing the hotend LEDs. The spring is very delicate and the space is minimal—try not to break it off.

Also, my ECAS + BigTreeTech SB2209 mod is compatible. See here https://www.printables.com/model/1255003-voron-stealthburner-with-ecas-for-btt-sb2209-usb

 See my related compatible models

  • Stealthburner Clockwork 2 for Mellow 3D ISG IDGA Gears

  • Voron 2.4 X Carriage Eddy for StealthBurner HF/UHF

  • Voron Stealthburner CW2 with ECAS for BTT SB2209 USB

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Disclaimer: Use this model at your own risk. I am not responsible for any damage to your printer or any consequential damages resulting from improper assembly or use. This is a personal design project.

License:

GNU General Public License v3.0

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