Cast iron ornamental fencing became popular in the early 1900’s due to the cost efficiency of manufacturing the different components of ornamental fencing. Cast iron utilizes molds for the different parts. Steel is melted to extreme temperatures and poured into molds. Once cooled the parts are separated from the molds, cleaned of burns and excess edges and ready for painting. There are several large manufacturers who supply primarily welding sloops who produce the bulk of cast iron ornamental fencing in today’s market.