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Posted: 2/9/2006 11:58:15 AM EDT
As it says.
I want to do some work on some uppers and need to know the correct filler metal.

Any info out here?

CP
Link Posted: 2/9/2006 12:27:25 PM EDT
what kind of filler? hot or cold?
Link Posted: 2/9/2006 1:32:44 PM EDT
I assume you mean welding filler rod. If so, I can ask my welding guys at work tomorrow. They're both pretty sharp on aluminum welding.
Link Posted: 2/9/2006 1:47:57 PM EDT
you may have to call up alco Almuminum or somthing,to get the right filler rod.Most welding supply stores dont always have the correct # rod on hand,so u may have to order abig box and then the guy
working at your welding store may say somthing like(7075 alm is unweldable yada yada yada....),it will weld nice, but it will degrade or break downon the molec. tech level ok for none stucteral welds.

Link Posted: 2/9/2006 2:35:10 PM EDT
Ok, not clear enough on my part.
Filler metal for TIG welding 7075 Aluminum upper and lower receivers.
I know it can be done since the class III armorers do it.
Since it doesn't have to be structural it is not unweldable.
Look at what John Norrell did with those cut up M16 lowers.

CP
Link Posted: 2/9/2006 4:37:03 PM EDT
all of my welding training says 7075 is unweldable.one time i put about 20 hours of machining into a part and f-ed it up. i welded it with 4043. held fine.
Link Posted: 2/9/2006 5:48:42 PM EDT
I was in a gun show in little rock and there was an old men seling a welding rod for aluminium and he was using a regular torch and it was great,he filled all kinds of holes in diferent types of aluminium....
Link Posted: 2/10/2006 5:13:55 AM EDT
This seems intriguing for aluminum repair.

http://www.aluminumrepair.com/index.htm

Gordon
Link Posted: 2/10/2006 7:28:08 AM EDT
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