I considered Ti, but it's soooo heavy :) - I believe 60%. Not sure if I could achieve sub 1 oz with it ;)...however, it is significantly stronger (140 ksi or so), so it may be the best option - Good idea RC. I'd have to weld it up - no way I'm machining the head from a block of "gold".
The 7075 (about 85 ksi) is easy to work with, and I can anodize afterwards. I'll try to see where the sweet spot is regarding strength.
If I stick with the "T" bar/block idea, I'll have to use aluminum. Ti would be a PITA to machine.
Funny you mention the electron-beam welding, even my welding buddy had to look that up! - however, we don't have the capability so I most likely won't go that route.
Any idea where people are buying carbon shafts these days?The golf store ones are too thin - ditto with arrow shafts.