Completed the back skin and corresponding ribs. One skin to go on the front, odds and ends around the lip, then on to the lid.
Steps:
- Bend sides up and clamp in place with a wood strip.
- Fit back and sides together, then rivet the seam.
- Cutout, then slightly bend the two brackets that hold the ribs onto the frame, from 1/8" steel.
- Clamp the steel brackets to the aluminum ribs.
- Measure and adjust the size of the opening at the top and bottom by adjusting the clamps.
- Spread soggy wet paper towels out to protect the aluminum, and then weld the steel bracket onto the frame.
- Drill and rivet the steel bracket and aluminum rib together.