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Across 4. bonding filler material to a base metal. 6. a hardened, brittle,fluted tool used to cut threads into holes in metal. 11. solder with flux inside 13. a set of tools for making threads. 14. a device used to cut pipe threads in a hole 17. substance applied to threaded fittings to prevent leakage at pipe connections. 19. material that removes tarnish or corosion,prevents corosion from developing,and acts as an agent to help solder speread over metal. 21. hollow core solder 22. a tubular rivet that is enlarged by pulling a ball-ended stem in it until the stem breaks; leaving the river secured 25. to spread or shape by hammering; a fastening device held in place by spreading one or both ends. 26. process of soldering a piece of copper pipe into a fitting 27. an instrument used to cut threads onto a rod or bolt. 28. bonding with matals and alloys that melt at tempatures below 840 degrees.

Down 1. handle used to turn a die. 2. a drill of longer than standard length. 3. cube or block of special flux for cleaning soldering coppers 5. a twist drill made and tempered specially to drill metal. 6. tape used on threaded fittings to prevent water or gas leakage at pipe connections. 7. a set of taps, dies, and handles used for making threads. 8. tool used for soldering and consisting of a wooden or plastic handle, steel shank, and copper tip 9. straight threads that can be cut the entire length of a rod. 10. holding metals together by melting them together. 12. solder containg 50 percent tin and 50 percent lead. 15. mixture of tin and lead 16. hollow connectors designed to attach to pipe. 18. it starts threads and completes them if the tap can extend through the material. 20. this type of tap will cut to the bottom of a blind hole. 23. a deviceused to turn a tap. 24. bonding with metals and alloys that melt at or above 840 degrees when capillary action occurs.