Cabin frame finishing
I spent a little time today finishing up the cabin frame. I drilled the inside bracket holes, which ended up being rather difficult. I drilled #40 pilot holes in the brackets according to the dimensions on the plans. I then mounted the cabin frame, installed temporary bolts, and then used a drill bit to mark the hole locations on the frame through the bracket. Ideally, I would have just drilled the holes while the frame was attached, but there wasn’t nearly enough room to fit the angle drill through the access hole in the back of the frame. I disassembled everything and drilled the frame to #40 on the bench. I re-assembled the frame once again and then drilled the holes from the outside to #12 in steps. I also drilled the forward row of holes at the aft end of the cabin frame support.
I have a little bit of deburring, countersinking, and priming still to do, but the cabin frame is basically done at this point.