January 18, 2026
Description
This project started with a small moment of inspiration— a leftover piece of PTFE tube that was about to be thrown away.
Then it hit me: “PTFE is extremely low-friction… could this work as a bearing?”
From that idea, I began designing a simple filament holder that works with both 250g mini spools and standard 1kg spools—no adjustments, no extra parts.
PTFE tubing has very low resistance, which makes it surprisingly effective when a filament spool is used vertically. By using a short piece of PTFE tube as the common contact point for both small and large spools, I was able to create a holder with:
Fewer parts
A clean, minimal structure
Smooth and stable spool rotation
No ball bearings required
The result is a simple, practical, and elegant filament holder, inspired by the idea of making the most out of ordinary materials.
No unnecessary complexity—just a smart use of physics and materials. Sometimes, the best upgrades to your 3D printing setup come from the simplest ideas.
If you enjoy functional designs with a minimalist mindset, I hope you’ll find this useful. Happy printing!
Required Materials ID 2mm × OD 4mm PTFE Teflon Tube 75mm x2
Printer Brand:
Geeetech
Printer:
Geeetech I3ProB
Rafts:
No
Supports:
No
Resolution:
0.2
Infill:
25％
License:
Creative Commons — Attribution — Noncommercial — Share Alike
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