250g to 1kg Spool Diameter Adaptor

Tired of those small 250g sample spools rattling around or failing to reach the rollers in your AMS or filament dry box? This project provides a quick-snap solution to bridge the gap.

This adaptor set increases the outer diameter of a standard Elegoo 250g spool to match the dimensions of a standard 1kg spool, ensuring smooth rotation and compatibility with external spool holders and automated material systems.

### Key Features

 * Universal Fit: Designed to bring 250g spools up to the standard ~200mm diameter.

 * Easy Handling: Features a simple snap-on/snap-off mechanism using integrated clips—no screws or glue required.

 * Durable Design: Optimized for PETG to provide the necessary flexibility for the clips and long-term heat resistance if used in a filament dryer.

 * Material Efficient: Uses approximately 107g of filament for a full set (two rings).

### Technical Specifications

 * Target Spool: Elegoo 250g Rapid PLA+ (125-130 mm diameter) (or spools with similar side-wall geometry).

 * Recommended Material: PETG (for durability and clip "springiness").

 * Filament Usage: ~107g.

 * Assembly: Print two rings; one for each side of the spool.

### Printing Tips

To ensure the clips don't snap during assembly, I recommend printing with at least 3 wall loops and a 0.2mm layer height. If you find the fit too tight or too loose, a quick 1% scale adjustment in your slicer should do the trick!

Would you like me to generate a catchy title for this or perhaps help you draft the assembly instructions for the upload page?