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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Welding question.
On Friday, April 22, 2011 7:51:24 PM UTC-7, Califbill wrote:
I am doing some rebuild on my aluminum river jet boat. Going to weld closed some old bolt holes in the gunnel and dash. What is a good backing plate Copper contamination would be bad (it accelerates aluminum corrosion), so I'd consider... ceramic. A brick, a coffee cup... something like that. |
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