Hi Guys,
This is interesting because I have an AC Lincoln welder and never thought about trying it with the hi frequency adapter,for Aluminum. I haven't kept up with welding to know the hi frequency adapter was even available, but thanks to you I do now. Up until now I have been using the Aluminum welding rods that are used with a Propane or Mapp torch. This is tricky to learn but you can do it. This type of welding works best when you keep the welding part of building a muffler to a minimum. I machine the parts and keep the fits as close as practical with beveled edges where the weld goes etc. This stuff won't often flow like normal solder does. Patience and cleanliness like when soldering copper pays off. You can no doubt do a nicer looking job as with commercial mufflers using better (expensive) equipment, but you can do a decent job of it with these crazy rods. This stuff is very heavy, so use it sparingly, and brushing with a stainless steel brush really does help, it has something to do with Ions. I saw it demonstrated at a Flea market and on TV so I tried it. Now I like it, its another modeling tool now. Have any of you tried it?