Framing up the long side of the box.
Oppps! Mistakes do happen.
The plan calls for mitered joints. At the time I was pondering this, the dear wife came in for a look. She suggested to just do what’s easiest. That would be a butt joint. Ok, I’ll go along with that. When I make the second box, I’ll do the mitered joint.
Here’s what it will look like.
All four frames in place.
Next, cut the panels and nail in place.