Modular 1–5 Spool Holder – Clean & Expandable

This is a modular, clean-looking multi-spool holder designed to keep multiple filaments neatly organized, ready to use, and mechanically stable.

It supports 1 to 5 spools (and beyond) by simply extending the same module. The geometry keeps spools securely seated, eliminating the issue where a printer can accidentally pull a spool off its holder due to minor tangles.

Why this is especially useful for Bambu users without AMS

If you’re running a Bambu X1 / P1 or H2 series printer without an AMS, this is a huge quality-of-life upgrade:

• Print a 4-spool version (X1 / P1) or 5-spool version (H2)
• Place it on top of the printer
• Add a 4-to-1 PTFE splitter
• Run one PTFE tube to each spool

The result: multiple filaments pre-loaded, neatly organized, and instantly swappable, instead of constantly handling a single side-mounted spool.
This is not an AMS replacement — there’s no rewind system — but it’s miles better than having no multi-spool solution at all.

Easy printing — no tinkering required

This model now includes fully prepared 3MF “click-to-print” profiles for versions:

• 1 spool
• 2 spools
• 3 spools
• 4 spools
• 5 spools

Each profile contains:

• The correct number of parts
• Proper orientation
• Carefully tuned print settings
• No supports required

Just choose how many spools you want, hit print, and you’re done.

Design notes

• Modular: build 1, 2, 3, 4, 5+ spools using the same system
• Elegant, compact layout — when assembled for 5 spools, it sits flush with an IKEA Lack enclosure
• Originally designed for Prusa setups in Lack enclosures, where it proved reliable and stable over long-term use

Bearings & assembly

Each spool uses 4× 625ZZ bearings:

• 1 spool → 4 bearings
• 2 spools → 8 bearings
• 3 spools → 12 bearings
• 4 spools → 16 bearings
• 5 spools → 20 bearings

Base connectors should be glued with superglue to prevent separation over time.