yeah I thought about using a rectangular piece (5oz) or 10oz
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=1348981150
but that runs about $50
or
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=1349889924
hehe
more fun would be had with this 100oz bar I imagine
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=1348707393
but like you said those pipe dreams are a might cost prohibative...
I think I'll just pick up some copper stock and have at it,
for those interested I think that the 100oz is like 64.00 mm x 165.00 mm