Keep your wire spools organized and accessible with this Gridfinity-compatible spool holder system, designed with versatility and stackability in mind. The set includes six variations, each with dimensions listed in Gridfinity units:

• 6-Slot High: 2×4×11
• 6-Slot Low: 2×4×10
• 4-Slot High: 2×4×11
• 4-Slot Low: 2×4×10
• 3-Slot High: 2×2×11
• 3-Slot Low: 2×2×10
• 2-Slot High: 2×2×11
• 2-Slot Low: 2×2×10
• 6-Slot High (Small Spools): 1×4×7
• 6-Slot Low (Small Spools): 1×4×6

Each holder variation is stackable, allowing for efficient vertical storage while maintaining access to your spools. The maximum spool diameter for the small holders is approximately 34mm, while the large holders can accommodate spools up to ~60mm in diameter.

Every spool holder comes in two height options:

• Use the low versions to save space and don’t mind if spools may slightly interfere with the holder above when stacked—this, of course, also depends on the size of the spools you use.
• Choose the high versions if you want your spools to roll freely even when stacked—ideal for larger spools or smoother dispensing.

Also included is a customizable spool axle, which lets you adjust the diameter to fit your wire spools, and optionally modify the length if you want to change how tightly the axle sits within the spool holder. A sample print profile is provided for customized axle.

UPDATED 2025-11-01: Added 1-slot and 2-slot holders that can accommodate spools up to 79 mm in width.

UPDATED 2025-09-16: Added 2x2 sized spool holders.

UPDATED 2025-06-30: Added a print profile that contains wire spools compatible with the spool holder. You can use these spools if you have wires lying around without spools. A drill adapter is also included, which can be used to wind the wire onto the spools. Use an H6 drill bit to attach the adapter to your drill.