The necessary materials can be obtained for free anywhere.
I designed this with The Pentagon in mind, as a way for our armed forces to deal with their organic waste without burning or trucking it, both of which expose our troops to harm.
Setup and knock down is very quick and easy.
This composter will eventually compost itself, which is a good thing, since it's made from waste materials and is so easy to build.
Want your compost quicker? Try a Compost Tumbler
Step 1: Gather Materials
5 identical wooden panels. If the ones you find are too big or small, cut them down or nail on another section. I found some 40" wide chunks of weathered plywood of varying lengths from packing crates. Don't use pressure-treated wood. For anything.
Rope, cord, or wire. I found a 20foot chunk of polypropylene rope and some smaller pieces of polypropylene rope.
Paint: Optional. Since my composter is intended for the military I chose olive drab. Since I'm on a former military base which is now a superfund site, all the military shades of paint are very plentiful in orphan piles.
Step 2: Trim the Panels
I ended up with five panels 37" (about one meter) square.
The dimensions are not critical at all. Make yours big enough for the quantity of compost you'll get, or to fit in the space you have available.