My guess is the thickness ratios of the metals have to be exact so the 
expansion rates together match that of glass.  Easier said than done!

Martin wrote:
> William "Chops" Westfield wrote:
>> On Jan 9, 2008, at 7:26 AM, Spehro Pefhany wrote:
>>
>>   
>>> (re Dumet)
>>>     
>> Can you just copper-plate iron/nickel wire?  Copper plating
>> is relatively simple...
>>
>> BillW
>>
>>   
> That's a good question. I'll probably never get the ambition to work 
> with glass, but it's one of those things I'd love to try.
> -
> Martin
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist