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Coreboxx PTFE Guide – Airflow Cutoff for Enclosed Printing
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PTFE guide for Coreboxx to block airflow and keep chamber sealed for better filament printing
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Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
The Coreboxx comes with a top panel that allows air to escape from the CoreOne.
While this design works fine in general, it is not ideal for filaments that require a stable heated chamber (such as ABS, ASA, or Nylon).
To solve this, I’ve designed a simple part that:
- Lets the PTFE tube move freely without restriction.
- Prevents air from leaking out of the chamber.
- Helps maintain a stable internal temperature for better print quality.
This makes the Coreboxx more suitable for printing technical filaments inside an enclosed environment.
You'll need 2x4mm inserts to fix the body with 2x6mm M3 screws.
Print instructions
Print recommendation in PETG:
- Infil: 15%
- No support
Changelog
v1.1
- Removed clips
- Better sized width to fill the hole
- Adding screw system with inserts for stronger fit
- No support needed anymore
- Enlarged the hold to reduce PTFE constraint
v1.0
- First release