To make the bi-fold, I started by cutting my 30″ (less a few fractions of inch from previous work) door in half. I did this by placing it on my temporarily work bench and clamping a straight 2×4 over it from both ends of the table. I attempted to find the exact center by taking measurements in multiple locations along the door’s height. I made marks in 3 places along the door and ran a line up the door’s center stile. Read on to see the full story.