I built this based on a design in Easy to Make Furniture It’s a modular shelving unit made from 3/4″ Baltic Birch plywood, fir 2×2’s, and a whole whack of bolts. The original plan called for plywood painted white with the edges finished, but I prefer the look of Baltic birch without finish as you see the many layers of ply.
The book also called for 12″x16″ pieces of plywood to make each shelf piece, however I didn’t have enough wood nor the space for the final product, so I went with 8″x12″ pieces. Anyone trying this shelving unit should look at the books/objects they are planning to put in it as mine was a bit restrictive to certain books due to the size of the pieces.
As I said before, the whole thing is bolted together with 2.5 and 3.5″ long 1/4″ bolts. After a few months, you’ll need to re-tighten all the bolts as the wood shrinks over time. I really like how it turned out and was made in a couple of days with only a table saw and drill press.