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Across 1. to heat a piece of tool steel followed by controlled cooling so as to control the degree of hardness 3. two sharp steel legs connected on one end that are used makearcs and circles 6. metal that comes from iron ore 8. reaction of metal to liquids and gases that causes them to deteriorate or break down 12. a soft, gray rock that shows up well when marked on most metals 13. file that has teeth laid out in two directions 14. a piece of metal bent into a small circle 15. a mold that holds molten metal 17. coated steel with zinc for resistance 19. a piece of material such as wood or metal 20. steeel punch with a small point 21. a large scissorlike tool for cutting sheet metal and fabrics 22. metals that do not contain iron 23. to cool steel slowly so as to make it soft and malleable 24. a sharply pointed tool with a wooden or plastic handle used to mark metal 25. mixture of two or more metals

Down 2. combination of cast iron core and ductible metal 4. file that has teeth laid out in one direction 5. a filling procedure done by placing the file at 90 degreesto the metal 7. large scissor like tools for cutting sheet metal and fabrics 9. workable 10. a device that holds a blade desighned for cutting metal 11. mixture of tin and lead 12. a very small, metal , sharp-tipped marker 16. a peice of tool steel shaped, tempered, and sharpened to cut mild steel when driven with a hammer 18. able to be bent slightly without breaking