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
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 >
Barbie dolls are made of polyvinyl chloride, synthetic fiber, elastomer, PBT and water-based paint. The materials used to make a Barbie has changed since the first Barbie was created in 1959. As of 2014, the soft vinyl, elastomer, and PBT provide more flexibility and realistic movement to the modern day Barbie. In the past, Mattel used porcelain to create the expensive, collector’s edition Barbie dolls.Full Answer >
Bricks are made from fired clay, manganese, barium and barium carbonate. The raw materials are combined and formed into bricks and then fired in a kiln.Full Answer >
Mobile phone parts are made from a combination of rare earth elements and plastics. Rare earth elements are used to create the glass display, magnets in speakers, headphones and vibrating motors in cell phones, according to PBS.Full Answer >