Parametric Peptide 3m Vial Holder with Snap Lid

A fully parametric vial storage solution designed for 3ml crimp-top vials (16mm OD). Whether you need to store 2 vials or build a large custom grid, this model has you covered.

Two ways to print:

• Ready-to-print profiles for the most common quantities — just load the plate you need and hit print
• Parametric OpenSCAD file for any custom configuration your storage needs require

Ready-to-Print Plates

Pre-configured plates are included for the most commonly needed quantities:

• 2, 3, 4, 5, 6, 7 vials
• 8, 9, 10 vials
• 15 & 20 vials
• 25 vials (5x5)
• 50 vials (5x10)

Need a Different Size? Use the Parametric File

The included OpenSCAD file lets you generate any configuration using the built-in Customizer. The layout is controlled by just two settings — vials_per_row and num_rows — so a 10x10 (100 vials) is just as easy to generate as a 3x1.

Customizer Settings

Layout

• vials_per_row — number of vials per row (1–12)
• num_rows — number of rows (1–6)
• render_part — set to base, lid, or both

Fit Tuning

• clearance — increases vial pocket diameter. Start at 0.5mm, adjust in 0.1mm steps if vials fit too tightly
• lid_gap — increases space between lid and base. Start at 0.2mm, increase if lid is hard to slide on

Snap Feel

• snap_p — snap tab protrusion. Recommended starting points:
  • PLA: 0.8mm (default)
  • PETG: 1.2mm
• snap_z — tab position, affects how easy the lid is to pop off
• snap_tip_ratio — ramp shape. Lower = gentler on/off feel

Recommended Materials

• PETG — recommended for freezer or long-term cold storage. Handles repeated freeze/thaw cycles without becoming brittle. Use snap_p of 1.2mm or higher.
• PLA — great for room temperature storage and test prints

Printing Tips

• No supports required
• 15% infill or higher works fine — these are solid prints that don't need to be dense
• Print base and lid separately or use both to get them laid out side by side automatically
• Always do a small test print (2x1) first to dial in clearance and lid_gap for your printer before committing to a large grid

Design Notes

Designed in Shapr3D and made parametric with AI assistance. The snap lid features a finger lift tab and chamfered entry for smooth on/off feel. Vial wells are sized for standard 3ml crimp-top vials with 16mm OD.