The second option for manufacturing an electric concrete mixer is more complex, and requires a longer time. We will need a metal reservoir, which will be drilled in a sufficient volume on both sides to attach a shaft with a drum. The loading hole can be performed as described in the first version. At the bottom, it is necessary to weld a gear crown to which a gear with a slightly smaller diameter will be attached. In order for you to get an electronic concrete mixer, you need to weld the pipe to the tank, add a bearing with a larger diameter, and connect the shaft with the engine.