Several years ago my sweet brother made this double stalled compost bin for me. Pretty handy because its easy to turn the compost by just forking it from one side to the other. It is all screwed together; screws being the only way to go. The bins are 3' x 4' x 3' deep. The spacers on the slidy-slat front are wine corks.
Phoebe checks regularly for our "Compost Rat".
I scored the nice plastic compost bin (from Gardener's Supply) from someone on Craig's List, thanks to Angela a couple of years ago.
It makes nice compost too IF I remember to water it.