The best floating shelves for heavy items are made from strong, heavy-duty materials (both the shelf and the brackets to support it) that are super sturdy when installed properly. Beyond ...

It's actually pretty straightforward to DIY heavy ... need for corner brackets. Uprights are also cut from the 2x4 boards, with spacers screwed to them to position and support the shelves.

We have the best of both worlds with a simple DIY wall-mounted corner shelf ... this cardboard shelf is best for lightweight ...