Those who are old and experienced. He will be known how to use a cast-iron weight plate to enjoy weight-lifting. Cast iron weight plate is the main tool of traditional exercise. Cast-iron weight plates are made by pouring molten iron in the shape of a sand plate. It is then powder coated. This classic weight plate is just as useful today. The grip is good in cast iron weight plates. And thatâ??s a solid plate. This accompanies for a long time. The use of the classic iron plate makes it feel its strength and power. Easy to slide cast iron weight plates into bars. Even today, cast iron weight plates are used in the Olympics.