10x Peptide Vial Case (3ml) SnapLock (No Hardware)

Updates

• 2026-01-26
  • 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.

Details

This is a 10-slot case for 3ml peptide vials. I modified the original concept to achieve more compact scaling, saving space in the fridge. I also created a custom insert to keep the vials from rattling or clinking. I also made this version in addition to my original remix, which did not have a separate latch.

I opted for a fully printable design to make assembly easier, which eliminates the need for any additional hardware or components that might rust in a humid environment.

Design Details

• Fits 10 Vials: Sized for 3ml vials (17mm diameter) with caps.
• No Hardware: The top, bottom, and latch snap together. No screws or pins required.
• Secure Insert: Custom internal layout keeps vials upright.
• Compact Scaling: Slimmed down to fit easily in side doors or butter compartments.
• Material: Printed PLA+ so the latch and snap features can flex 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.