The Filament Spool Clip is a small, practical accessory for keeping your filament spools tidy in storage. It snaps directly onto the edge of the spool and holds the loose end of the filament securely, preventing it from unraveling and keeping the roll neatly wound between prints. The design uses a simple friction-fit: the top opening clips over the edge of the spool, while the bottom slot grips the filament strand itself, keeping it locked in place so it doesn't spring loose or tangle in storage. Key features: Snap-on spool mount — clips securely onto the edge of most standard filament spools. Filament channel — holds the loose end snugly without letting it slip free. Small and unobtrusive — a compact print that stores easily with your spools. No hardware needed — fully 3D printed, no screws, glue, or extra parts required. Use cases: Keeping partially used filament spools tidy and tangle-free in storage Preventing filament from unspooling in a dry box or on a shelf General filament and spool organization Printing tips: Prints easily in a single piece with no supports needed. A slightly flexible filament (like PETG) may improve the snap-fit grip, though PLA works fine for most spool edge thicknesses. A tiny, no-fuss print that solves a common annoyance — filament spools unraveling when they're not in use.