Weld Aluminum Square Tube?

I'm thinking of building an RV trailer, using aluminum square tube to make the trailer frame and the RV frame, skinning it with aluminum sheets. I've never welded anything, but am a fast study. Thanks!


Spencer C (author) 7 months ago

Oh, yeah, I meant to ask if brazing the tubes together would be strong enough?

Nope! I wouldn't trust a braze with all that potential road chatter. This class teaches MIG welding, but if you're going into the world of aluminum I recommend TIG welding. Aluminum welding is awesome, but a little high-touch.

Good luck!

Spencer C (author)  audreyobscura7 months ago
Thanks!

I wouldnt tig weld an RV Trailer.

Production aluminum welding is done with a Mig welder with an aluminum spool gun.

At my welding shop, I specialize in aluminum and use a Millermatic 211 Mig Welder with a Spoolmate 150 spool gun. I recommend using .035 Harris 5356 welding wire, as its easy to work with and strong.

millermatic-211-mig-welder-auto-set-with-mvp-907422-53.jpgmiller-spoolmate-150-spoolgun-300372-6.jpg