can you cut cast iron with oxy acetylene
Oxy-fuel welding and cutting Oxy-acetylene can cut only low- to medium-carbon steels and wrought iron. High-carbon steels are difficult to cut because the melting point of the slag is closer to the melting point of the parent metal, so that the slag from the cutting action does not eject as sparks but rather mixes with the clean melt near the cut. This keeps the oxygen from reaching the clean metal and burning it. In the case of cast iron, graphite between the grains and the shape of the grains themselves interfere with the cutting action of the torch. Stainless steels cannot be cut either because the material does not burn readily.[14]
Dutch oven During the 17th century, brass was the preferred metal for English cookware and domestic utensiles, and the Dutch produced it at the lowest cost, which, however, was still expensive.[1] In 1702, Abraham Darby was a partner in the Brass Works Company of Bristol, which made malt mills for breweries.[2] Apparently in 1704, Darby visited the Netherlands, where he studied the Dutch methods of working brass, including the casting of brass pots.[3] Darby learned that when making castings, the Dutch used molds made of sand rather than the traditional loam and clay, and this innovation produced a finer finish on their brassware.[4]  In 1706 he started a new brass mill in the Baptist Mills section of Bristol.[5] There Darby realized that he could sell more kitchen wares if he could replace brass with a cheaper metal, namely, cast iron.[6] Initial experiments to cast iron in sand molds were unsuccessful, but with the aid of one of his workers, James Thomas, a Welshman, he succeeded in casting iron cookware.[7] In 1707 he obtained a patent for the process of casting iron in sand, which derived from the Dutch process.[8] Thus the term "Dutch oven" has endured for over 300 years, since at least 1710.[9][10]