The design is simple with positive locking in both open and closed positions. It’s safe to use and very strong.

How to assemble:

1. Insert an SK5 blade as seen bellow, you might need to use a little force until it snaps into place (you can buy them by seaching “trapezoidal blade” on temu, aliexpress, amazon, etc):

2. Then push it into the main body like this:

Tip: At first, the blade may feel a bit stiff, which is intentional. This stiffness is to prevent accidental opening, especially while in your pocket. With continued use, the mechanism will become smoother.If you find it too stiff for your preference and have silicone lubricant or another plastic-friendly lubricant available, you can apply it to the sliding mechanism using a q-tip. This will make the action butter-smooth while ensuring secure locking.

Check out my other models: 

Minimalist Filament spool storage v2

Still looking for the perfect filament clip? It's here: The Perfect Filament Clip v2

Designing these models is HARD, and sharing them makes it harder. Creating these designs takes substantial time and effort, involving a lot of testing and a significant amount of filament wasted until the perfect design is achieved. While making models for my own use is easier, sharing them with others requires additional work. The designs need to be more foolproof and universal, and I have to create all the profiles, take pictures, and write descriptions and instructions. Your support would be greatly appreciated. Boosting my models would really help me continue sharing these designs with you. Thank you!