Frame 5 attached

I marked out and drilled the holes in the clips for attaching the frames in frames 2,3,4 & 5. Then took these to work and used the drill press to get nice square holes.

I also drilled the holes in the stringers for frames 2 & 3. Somehow I messed up frame 3, with one side of it out by about 10mm, still can't figure out how I managed that.

Lastly this afternoon, I permanently attached frame 5. This went without too much stress. The photo is with the job complete. Note the string level being used to check the frame is level across the stringers.