1. Pour the mold 3/4" to 1" full of plaster, concrete, etc. Shake to remove air bubbles. Note: If there's a certain location at which you wish to position the hanger, mark that position on the lip of the mold before pouring the concrete.

2. Bend a 10-12" length of sturdy wire ( a coat hanger works well) in the center to form a U. Curl the ends.

3. Press the wire into the concrete with the U protruding above the surface 1-2 inches below the upper rim. To prevent the U from sinking into the cement or plaster, ballast the wire with a small chunk of styrofoam.