Part 1 

Check the thickness of your finished material edge with the opening of the magnetic edge clasp before installing. If your material is thicker than the opening, trim out any stabilizer or interfacing in the shape of the claspMagnetic Edge Clasp Strucitons
The clasp should fit tightly and firmly after installation, and use the 2 included screws to lock the clasp in place. 

Part 2

Magnetic Clasp Installation Instrucitons