The frames are now set to be erected.  A temporary cross member is glued across the top edge of the frame with marks lined up with the edge of the rising wood.  Several squares are used to align with the building board and my Incra rule provides a plumb line from the rising wood to the mark on the cross member.  Once the first (DF) frame is in place and the glue dry, I can procede with DF1, 1Fore and 1aft. I cut the notches for the sweep ports on DF1 and after it was in place, I dry-fitted 1fore