clamp to hold Plexiglas

I made this bracket / clamp to hold .250 thick Plexiglas on top of my office cubicle. this is a damage free device designed to use a opposing tapers on the top and one on the bottom.
if you look at the model you will see that it has under cuts on the bottom to act like a spring loaded hinge.
this designed worked surprising well. i will be adding updated components to go along with this designed. clamps to tie in pieces at the top. and pieces to tie 3 and 4 sections together