Dumbbells can be made from a large number of materials. Usually, they consist of cast iron, coated with rubber, neoprene or paint, according to Adamant Barbell. However, they can also be made with many other materials, including concrete.Know More
Adamant Barbell explains that hex dumbbells are made out of cast iron, and rubber hex dumbbells are the same, but coated with rubber. Pro style dumbbells are made of solid steel and rubber pro style dumbbells are, again, just coated with rubber.
Dumbbells can be made, at home, by filling milk bottles with concrete, sand, rocks or water. However, this homemade equipment should be used carefully to avoid injuries.Learn more about Home Fitness Equipment
Wood fire ovens can be made of masonry (stone, brick and tile), cast iron, clay and other ceramics, adobe or cob. Each of these materials has been used for making ovens for hundreds of years. Cast iron is a relative latecomer, being first used for ovens in the 1700s.Full Answer >
The Parthenon of Ancient Athens was made of hand-carved pentelic marble from top to bottom, with some timber to support the slanted marble tiles of the roof. The segments of the columns were internally secured by iron clamps with a layer of molten lead. The statue of Athena Parthenos inside the Parthenon had ivory skin and nearly 2,400 pounds of gold armor, weapons and jewelry.Full Answer >
The Pantheon, a 1,900-year-old Roman temple containing the world's largest free-standing dome, is made primarily of concrete, volcanic rock and granite. The most remarkable part, the rotunda and dome, is made of concrete that includes lightweight pumice as part of the aggregate.Full Answer >
Bouncy balls are made from natural rubber, polymers, plastics or sometimes treated leather. Bouncy balls can be made at home using borax, cornstarch, glue, warm water and food coloring.Full Answer >