Robust Shelf Brack Shelf

I added a shelf. The holes are to reduce the amount of filament used. There are two print profiles, one is of just the shelf because maybe you want different materials as the brackets. The other one is a solid unit, shelf melded with brackets, which saves on screws if you want that. Go give the original creator a thumbs up, good model, I just wanted a shelf on it and thought others might too.