Belt buckle frame

I had a broken belt buckle, a 3d printer and a bag of M3x40mm screws, so I decided to learn onshape and figure out if I could solve this on my own. The model works great so far, and is much stronger than I originally feared. If it breaks, I will print one with more infill, but even at 50% it seems pretty sturdy, especially given the 2 screws.