Stop guessing if you have enough filament left for your next print! This custom-designed gauge allows you to instantly check the remaining weight of a standard 1kg Creality PLA spool (1.75mm).

Key Features:

📏 Designed for Dual-Color Printing: For the best legibility and a premium look, this model is optimized to be printed in two colors. High-contrast colors will make the numbers pop and incredibly easy to read at a glance.
🔄 Live Monitoring During Printing: No need to unmount the spool or pause your printer. The top-hook design allows you to hang the gauge directly on the outer edge of the plastic spool while the printer is actively running. You can monitor your filament consumption in real-time!
📐 Precision Non-Linear Scale (The Increasing Gap): You might notice that the distance between the 100g marks gets wider as it approaches 0g. This is a precise mathematical feature, not a mistake! Because the outer circumference of the spool is much larger, it holds more meters of filament per millimeter of thickness. As the spool empties towards the smaller inner core, more vertical height is required to equal the same 100g of material. This gauge calculates that exact curve for you.

Compatibility: Calculated specifically for standard 1kg Creality PLA spools (Outer diameter: 200mm, Inner core diameter: 90mm).

Print Settings Recommendations:

Layer height: 0.20mm (works perfectly for color swapping).
Infill: 15-20% is plenty.
Supports: Not required if printed flat on its back.
Material: PLA, PETG, or anything you have on hand!
Happy printing, and never run out of filament mid-print again!