Now I need to make the back hatch into 2 hatches. First I needed to add the support where the 2 hatches will seam. Then I marked and cut the board and compensating for the carpet and movement of the doors, I left a 5/8" gap.
For the finished panels, I really didn't want to have a gap between the 2 hinges for each door. So I carefully cut half the hinge, so I would still have a full barrel when the hinge was in the closed position.
This allows 1 hinge with 2 halves to swing freely and separately. (Note: if you are going to try this, take notice that a piano hinge is usually crimped at the hinge point to hold the pin in the hinge. If I was to notch the other side of the hinge, it would not swing separately and freely. YOU MUST CUT THE CORRECT SIDE, crimps not shown in pics))