Classical Passive Filament Tracker

🎯 Keep an eye on your filament — the smart, simple way!

The Passive Filament Tracker is a purely mechanical tool that visually shows the estimated filament used and the remaining amount on your spool. No wires, no batteries — just mount it and let it roll!

✅ Compatible with popular spool types like Creality and Prusa 

✅ Shows an approximate percentage of filament left

✅ Perfect for quick checks before long prints 

✅ Zero electronics — fully passive, fully practical 

✅ Prints in one piece, no assembly hassle

💥💥do not scale the file💥💥

🛠 A clear, step-by-step PDF installation guide is included to get you started in minutes.

Make your 3D printing smarter and smoother — print one today and never lose track again! 🧵🌀