We have added a new section to our webpage entitled :DIY Plans where you can find out more information about how to build a compost toilet box We have been asked how me make our compost toilet box and have been meaning to share our plans for some time now. Here are some photographs illustrating how to build your own simple DIY composting toilet. We have added more detailed drawings with measurements in the DIY Plans and the photos below should give you a pretty good start. This system uses a 25 litre bucket that can easily be purchased on ebay and a 12 litre water container that can also be bought here. Sourcing the urine container is the most important part to deal with before building your own compost toilet box. The photos are of a basic ply compost toilet box, but a more elaborate wooden version can also be crafted using these dimensions. Materials needed : 1 sheet of 12mm ply, 50mm x 50mm battons. two hinges, toilet seat, 19mm ply, 25 litre plastic bucket, 12 litre water container and a urine separator. Tools Needed : Jig Saw or circular saw, drill, various screws.