6x / 10x BAC Water Case | SnapLock (No Hardware)

Updates

• 2026-02-02
  • Added a “10x BAC Water Case” Print Profile for additional storage.
• 2026-01-27
  • Added a “Double Latch Model” and rename the original profile to “Single Latch Model”.
    • Based on user feedback, the “Single Latch Model” was loose due to the single hinge design. The updated “Double Latch Model” addresses this feedback and is much more secure.
    • The "Double Latch Model" also has a shorter insert, requiring less filament to print and maintains the same security as the full height insert from the original model.
    • Both models are the exact same dimensions, so either insert can be used for either model.

This is a 6-slot case for bacteriostatic (BAC) water. I modified the original concept to achieve more compact scaling, saving space in the fridge. I also created a custom insert to keep the bottles from moving around.

I opted for a fully printable design to make assembly easier, eliminating the need for any additional hardware or components.

Design Details

• Fits 6 Vials: Sized for 30ml BAC water bottles (~33.5mm diameter).
• No Hardware: The top, bottom, and latch snap together. No screws or pins required.
• Secure Insert: Custom internal layout keeps bottles upright.
• Compact Scaling: Slimmed down to fit easily in side doors or butter compartments.
• Material: Printed PLA+ so the latch and hinge features can snap together and without breaking. Regular PLA works given the use case, and PETG is also preferred if you want more flexibility.
   

Print Settings

• Filament: PLA+, PLA, or PETG
• Supports: None used, tree supports can be added if any overhangs didn't print clean.
• Walls: 3 (Tolerances aren’t super tight; all mechanisms work smoothly with little friction)

• Infill: 15% (Gyroid is my preferred)

   

Assembly

Once the parts have finished, assemble the top and bottom pieces, attach the latch, and push in the insert. The insert is designed to be a tight fit, so it stays locked in place. The snap fit is snug to make sure the case stays together during use.

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