Re: [Amps] Aluminum alloys for panels?

[Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>]

With unknown or hard alloys, you can have trouble with the stuff cracking if 
you want to bend it. Heat treatment is a specialist job, but for rough and 
ready work at home, I find that smearing the back of the sheet with liquid soap 
and heating the front until the soap turns brown usually anneals it enough to 
prevent cracking. Howver, be aware that aluminium alloys have the peculiar (at 
least to me) property of hardening with time after heat treatment, so don't 
anneal today and expect it to be OK in a month's time!

73

Peter G3RZP
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