Square Cutout Shelf Bracket

Needed some shelf brackets for the home. Everything I saw had sharp edges or didn't have easy access to screw holes, frustrated I made my own. The edges are rounded because our home has textured walls and this should help reduce any obvious imprinting, but is wide enough to remain stable.

The bracket is 4"x4" or 100mm x 100mm, holes are roughly 5mm or 1/4 inch should work just fine. I've not done weight tests yet but plan to and will update this page when that happens.