Arduino Storage

This is a something I've been working on for stackable "shelves" for Arduinos to slide in and out like a server rack.

it also uses magnets to stay together the magnets I used can be found here:
http://www.amazon.com/Silver-Strong-Block-Magnets-Refrigerator/dp/B01DPSKPR6/ref=sr_1_8?ie=UTF8&qid=1461544650&sr=8-8&keywords=tiny+magnets