u/Assili_

I'm making my own wooden frames using the glass of low cost store frames (they are made with some kind of MDF), but I didn't figured a practical way to secure the backing without using a pointdriver as I want the picture inside to be easily swappable.

I found on one frame that kind of securing hardware, it locks in a groove made inside the frame. I can make a groove inside my own frames but don't know how this hardware is called and where to find it. Any help is welcome !

(I'm in France)