A lady at work showed me a pic of a shelf like this & asked if I could make one for her son. And of course I would never say I can't do something so I figured out what I needed & got started!
Step 1: Tools & Materials
Just basic tools are needed. A saw, a drill, a grinder or hack saw & that's about it.
3- boards (I bought 8x6' cedar fence boards)
2- 3/8x36" all thread
4- 3/8 nuts
4- 3/8 flat washers
20- used baseballs
Optional brackets to hang