I've never done any woodwork in my life but I wanted to try.
I thought about making a simple shelf consisting of a few small crate-like boxes (Each box being 60cm in Length, 15cm in Width and 20cm in Height and the shelf itself would be about 120cm tall, or 6-crates tall) and was think about having a 2cmX2cm long vertical square "pole" at the corners and a 1cmx2cm rail instead of a full side for each crate that would meet at the corners in a channel carved in the poles and touch in a 45º edge to the other rail of a corner. Something like this:
(Left to Right: 2cmX2cm pole with the 2cmX1cm channel cut through, the side rails in place, topside view of the join area ignoring the rest of the pole that would be on top of the joint)
(Top-down and Side views of each crate, respectively)
I'd like to know if I use solid wood for the poles and plywood for the rails and bottom of each crate, in the dimensions mentioned, would it be strong enough? Do I need thicker plywood/wood for the structure to be able to hold?
I imagine this can be hard to predict, but I hoped someone experienced would have a better view on that and maybe point some obvious mistake I can't see.
Thank you very much for the attention!