This is a fully modular three-tier storage system designed to hold 150 standard 3 mL vials. Each tier fits cleanly inside the main box for compact storage, and all three tiers can be removed individually thanks to integrated side handles that make lifting effortless.

The design assembles using M3×30 screws for a sturdy, reliable structure. Every slot is sized to keep a 3 mL vial upright and easy to grab, making this organizer perfect for insulin vials, lab samples, peptides, hobby fluids, or any collection of small-format containers.

All components are optimized for straightforward FDM printing with no supports required. Parts print separately for convenience, and the full assembly fits printers with a 220×220 mm or larger build plate.

Highlights

Capacity: 150 × 3 mL vials (50 per tier × 3 tiers)

Tiers: Fully removable, each with built-in handles for quick lifting

Assembly: Requires M3×30 screws

Design: Multi-part system (outer box + 3 removable tiers + lid)

Printer Requirement: Fits on 220×220 mm+ build plates (e.g., Ender-3, Sovol, Neptune, etc.)

Applications: Insulin storage, lab vial organization, peptides, sample management, hobby fluids