So yesterday got a 1/2” drive 3/4” socket. Drilled 3/4” round stock for the 5/16” pin, welded to socket. Easy turn in shop now.
See flicker link.
I’m a bit confused. Did you cut the handle off of the 3/4” round stock and weld the 3/4” socket in its place or did you fabricate a whole new adaptor to use with 1/2” drive extensions?