Copper backing plate

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I got a hold of one of these for free.In theory, if I were to fold it over four our five times, could I use it as a backing plate to fill holes with my MIG?  I don't want to waste a perfectly good piece of copper if not.  I'm not sure what the "alloy 110" is.
Reply:110 is electrolytic tough pitch. It isn't great for welding but thermal conductivity for a backing plate should be fine and electrical conductivity is fine for use on a welding table top.I do not know if you would get good thermal coupling between layers by folding it. It would have to be pressed together. You could autogenously tig the sides of the stack I suppose but it all might fall apart if you do not move really quickly. Originally Posted by BonemaroI got a hold of one of these for free.In theory, if I were to fold it over four our five times, could I use it as a backing plate to fill holes with my MIG?  I don't want to waste a perfectly good piece of copper if not.  I'm not sure what the "alloy 110" is.
Reply:I picked up some scrap copper last time I was at the scrap yard.  One was about 1/8" thick and other one was about 3/8".  Thick one is about 3" wide and about 16" long.  I can check tomorrow.   I grabbed them for backing plates.I see you are near me, if you want a chunk of the thick stuff let me know.
Reply:Originally Posted by Going nowhereI picked up some scrap copper last time I was at the scrap yard.  One was about 1/8" thick and other one was about 3/8".  Thick one is about 3" wide and about 16" long.  I can check tomorrow.   I grabbed them for backing plates.I see you are near me, if you want a chunk of the thick stuff let me know.
Reply:I just hammer a piece of pipe flat.If you don't want to stand behind our Troops, feel free to stand in front of them.
Reply:Any electrician friends?BUS bar.  This is 3/16 thick.  Got 2 for nothing.  Scraps from a job.
Reply:Heck, I've even used flattened copper water pipe.
Reply:Originally Posted by Drf255Any electrician friends?BUS bar.  This is 3/16 thick.  Got 2 for nothing.  Scraps from a job.
Reply:Originally Posted by Drf255Any electrician friends?BUS bar.  This is 3/16 thick.  Got 2 for nothing.  Scraps from a job.
Reply:Covered in silver? you're a class act SqWave 200Millermatic 190Airco 200 ACHypertherm PM45Boice-Crane Band SawVictor O/A
Reply:Originally Posted by VPTI have the same thing but mine has small square holes in it down the middle spaced about 2" apart. it is also covered in silver.  Works a treat for a backer though!
Reply:I know mine was in the background for some of my pics, it is always on the welding bench. I'll try to remember to get a pic of it tomorrow.
Reply:Originally Posted by Going nowhereI picked up some scrap copper last time I was at the scrap yard.  One was about 1/8" thick and other one was about 3/8".  Thick one is about 3" wide and about 16" long.  I can check tomorrow.   I grabbed them for backing plates.I see you are near me, if you want a chunk of the thick stuff let me know.
Reply:Your welcome.  Let me know when you wanna come play.  You supply the beer and I'll supply the toys.  Was nice meeting you.
Reply:Now yer talkin'.
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Reply:That's a big'un