In two nights I made a simple, but powerful concrete mixer, which greatly facilitates and accelerates operation in suburban buildings. I was building a garage from concrete blocks with dimensions of 400x200x200 mm, which formed itself with the aid of formwork and the concrete mixer. It is made of old barrels liters to 50-60. To assemble this, anyone can do it, using what is at hand. So I give only a schematic diagram and a description of the main parts of the device, and interested themselves transformerait them based on their capacities and materials.
In the barrel cut out the hatch square shape, which is closed by a cover on the hook. The cover is wider than the hatch on all sides of approximately 100 mm. as the seal of the lid—the rubber Mat (it’s what they use in the bath; the water is not critical: the cracks become clogged with cement, and leaks that somehow still gets in the cover tray).