HMV Poster Frame Corner Braces

I had a problem with my HMV frames always falling off the wall and breaking, mostly at the corners, so in a very annoyed 10 mins I designed these corner braces. Idk how well they work, but I haven't had to replace frames since I installed them. I also have provided the F3D file if you wanna change them around/add stuff, as I think they are a really cool way to spice up your frames.

They are designed to fit HMV's 90 inch poster frames with no glue, just friction, which is why they are quite a snug fit.