Prepare the terra cotta clay by mixing with water to a thick clay consistency in the bucket. Clear the trash can of any dust or debris.
Apply a 3-inch thick layer of clay to the inside of the trash can including the lid. Make sure the clay is even and smooth throughout the can. Allow the clay to dry for 72 hours.
Attach the kiln coils to the bottom outside of the trash can. Weld the ends of the coils in place.
Drill two holes in the side of the trash can to attach the control box. Affix the control box to the kiln using the screws.
Connect the ground wire to the screws. Switch the kiln coils on and check the temperature before firing any pieces.