[TheForge] 8" hemispheres

[PlumDon at aol.com]

I have been trying without any success, to get some 8" hemispheres in  
14-16g. Many of the architectural ironworks suppliers offer an 8" hemi in 11g.  I'll 
bet they all get them from the same place and prices range from $15-26. But  
having no luck finding anything in the lighter gauges. None of these have  
responded to my request for lighter gauge hemis. 
 
Anyone have any ideas on where to get some or a quick way to make them?  
Banging them out of a 10" disc with big wooden and leather mallets is too much  
beating of an arm already in bad shape. Plus they come out a bit lumpy. 
 
Much appreciate any ideas. 
 
Don Plummer