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Across 1. This tool mixes fuel and oxygen as necessary for welding and cutting. 3. Oxygen valves are ________ seated and should be opened all the way. 5. This fuel gas is a hydrocarbon present in petroleum and natural gas. 6. _____ cutting burns through several thicknesses of material at once. 8. Always light the torch with a ________ lighter. 10. These are used to protect the eyes when using oxy-fuel processes. 14. The appropriate lens shade number for OFC welding or cutting. 15. The three letter designation for oxy-fuel gas cutting. 17. Container designed to store welding or cutting gasses. 19. The most widely used of all fuel gasses.

Down 2. The gaseous chemical in the air necessary for life. 3. The _____ lines indicate the efficiency and quality of an oxy-fuel cut. 4. Cutting a straight line is easier with a magnetic ________ square. 7. Acetylene is made from calcium _________. 9. OFC is a ______ process, like rusting. 11. These are recommended to protect the welders hands. 12. Always think ______ first. 13. What reduces cylinder pressure and maintains line pressure? 16. In the OFC process mild steel should be preheated to a ______ red before flowing the oxygen. 18. OLC designates oxygen ______ cutting.