Re: [VAC] aluminum sheet repair

["Dr. Gerald N. Johnson" <geraldj@xxxxxxxx>]

Its been reported that the Airstream skin is 2024-T3. A tough alloy to
bend and probably to weld.

Electronic's boxes like from LMB and Bud are often 3003 alloy which is
about as pure as aluminum can be bought. It bends nicely but is a real
pain to drill because its so soft. Its better to punch than to drill.
2024 is superb at drilling and hard to punch because its hard and it
gets harder with age. The pieces of 2024 that I have acquired over the
years as surplus will not bend in my box brake, they just snap off.

Gerald J.