I too used the 1/4" rod to get a clean and strong line. Here's some pics of the trimming.
Driver cut, rod shaped, tacked together.
This is before cleaning up anything.
Passenger trim
Used a hole in a frame to shape my 1/4" rod. It bends by hand.
Driver cleaned up.
Well attatched but not filled yet.
I used the metal off the pieces I cut off to fill the gaps on the wells.
Tacked the pieces in, sealed the welds with seam sealer and tried some texture and paint.
