Use basic ready mix concrete to create unique spheres for your home and garden!
Includes two of each of 10", 12" and 15" sphere molds.
High quality .080 ABS plastic.
Items Needed: *History Stones half round molds *mixing tub or wheelbarrow *mixing tool, i.e. small shovel or garden hoe *lubricant (vegetable oil cooking spray) *Ready Mix concrete to create two halves: 10” sphere 35 lbs, 12” sphere 45 lbs, 15” sphere 75 lbs *Thin Set Mortar 2 lb
Casting a Hollow Sphere: 1. Pour larger mold 2/3 of the way full. 2. Lubricate small half round mold and press it inside of the large ball to create the hollow space. 3. Continue to fill larger mold to top if needed 4. Twist the smaller half round mold after one hour to just loosen it from the concrete. 5. Remove smaller mold in two hours, and let concrete continue to set up for 24 hours