Materials 6'X4' ½ inch MDF (I used 3 2'X4' panels) 4'X4' 1 inch Polystyrene (extruded Styrofoam) Fine grit sand (about 2 gallons) Wood Glue (about 40 fl Oz) Paint small pebbles (sifted out of sand) Lightweight Hydrocal (1/2 gallon)
Materials6'X4' ½ inch MDF (I used 3 2'X4' panels)4'X4' 1 inch Polystyrene (extruded Styrofoam)Fine grit sand (about 2 gallons)Wood Glue (about 40 fl Oz)Paint small pebbles (sifted out of sand)Lightweight Hydrocal (1/2 gallon)