16ga 6061 aluminum using 1/16" (1.6mm) 4043 filler.
I used a tapered 2% lanthanated 3/32" (2.4mm) tungsten.
Welding small aluminum coupons with a chill backing,
This can also be done without backing but on small pieces of aluminum heat can saturate the piece and the puddle gets very watery.
You’ve probably read how aluminum needs to be really cleaned thoroughly before welding.
A lot of aluminum can be tig welded without doing a whole lot of cleaning it really depends on the application.
For general fabrication, often times a wipe with acetone or alcohol will do the trick if the me...