First I trimmed the doors to fit in the case using spacers.
The hinges were used as spacers along with anything else I could find of the same width.
Chamfering the edges on the fit is complete.
I made a spacer to align the hinge with the top of the rails.
Then pre-drilled the holes.
Hinges will permit some adjustment.
I made a second spacer to place the hinge on the case one hinge with taller.
Case spacer to ensure the doors are one hinge width above the bottom of the case.
Then I installed the hings on the doors first then the case.
Bi-fold door 1/2 open.
Bi-fold doors all the way open with support bar still in place.
I used Marc Spagnuolo plywood wall cabinet no mortise hinge installation video as a guide for what I ended up doing. I tried to photograph most of the steps.
I was able to use the hinges to create even space around all door edges.
Then I cut two different spacers. One spacer placed the hinges at the same location on the doors (in line with the rails). Then I cut a second spacer that was a hinge space taller to place the hinge on the case side. This ensured that the door doesn’t drag on the case bottom and left a hinge width space.
As usual, you can right click on the pictures to see them in larger size.