This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Both metal and copper oxidize when exposed to oxygen and this is a natural process. Copper that is exposed to the outside environment is more likely to turn green and that is why copper vases and decorative pieces in gardens are often green.
Use same procedure as in welding torch instructions. After setting flame, depress cutting oxygen lever and open preheat oxygen valve slightly to re-set flame. 4. Move flame to edge of steel and position preheat cones just above the metal. 5. When steel becomes red, slowly depress cutting lever to release oxygen stream to cut through steel.