Back from the ATOC and ready to get serious on Robins frame.  Here, you can see that I removed that little bridge between the chain stay lug ports.  I also reshaped the rear seat tube point to match the front and carved out a little window.

I also reshaped the outer points on the chain stay ports for aesthetic purposes.  

These bottom bracket shells don't have the down tube ports machined to the bottom, leaving a ledge.  I like the down tube to extend fully to the bottom of the shell, so I removed the ledge.  This shell started out at 180 gms. and is now down to 155 gms.  After the down tube point is reshaped and a larger window cut, over an ounce will have been removed.