TIG will work well for major repairs but not just any old TIG and not just
any old welder. You need an AC TIG and they start at about $1,500 and
welding aluminum is not a beginner's job. Controlling the heat is extremely
important.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"Len" wrote in message
news:1108735455.a48add4fc6f93cf9bb7b6a4e39f85961@t eranews...
Does your remark include repairs on a welded, multichine hull, of 6, 8
and 12 mm AlMg 4,5 Mn ? If so what wouldin your opinion be the best
way to repair say a hole of 10" diameter ?
I'm told TIG welding is perfectly suited for these kinds of repairs
and would not leave weakened areas behind. Am I being lied to ?

As a matter of fact I'm thinking of take a TIG welding course and take
a rel small welding machine with me.
Am I overlooking other methods ?

Regards,
Len.

"Glenn Ashmore" wrote:

Don't weld. Use stainless pop rivits or bolts. Welding will weaken the
area around the weld and result in cracks.