Papercrete is a building material made by combining paper and concrete. Emulsification, or combining the materials so they don't separate, is usually done through a machine mixer for papercrete, rather than any chemicals or detergents as some other substances require. While it is possible to buy or rent a mixer to use for one project, you can also make a machine at home if you do a lot of papercrete work and need something a bit more handy.
Attach a shaft to the motor. The exact method will vary according to the type of motor you selected. The simplest is a hand drill that you can buy a stucco-mixing attachment for. If you need a larger motor, be sure to check the manufacturer's specifications for mounting.
Attach the blades to the shaft, if you do not have a pre-made bladed extension. For the stucco-mixing attachment, purchase the attachment with the blades, since the paddle type does not mix as well.
Test your mixer before using. Be sure to wear proper protective gear, as you would with any home building or improvement project.
Mix your papercrete in a large tub. Depending on the size and strength of your mixer, you can use plastic or steel drums, garbage cans, or pails, from 55 gallons or larger, down to 5 gallons.