This is a simple shelf bracket that I designed for some small display shelves. It is a simple to print, simple to install design that works great for shelves around 8" deep. When printed with Bambu Lab ABS, two brackets spaced 16" apart can hold a 20lb dumbbell centered on an 8" deep shelf. Strength with other materials or print settings will vary.

The holes are designed to accommodate #8 screws and can be installed with most average sized drills using a 4" (~100mm) long bit.

The boards shown in the photos are 5/8" x 8" x 24" (~16mm x 200mm x 600mm)

Enjoy!