My wife and I built this Refreshment Console as a birthday present for our daughter. She had previously purchased a beverage refrigerator and wanted us to adapt it inspired by your barn door console project. Thus, we modified your plan to accommodate the height of the refrigerator. Also, she wanted three shelves with a closed back on the right side of the cabinet. Simply plan adjustments were all that was needed.
Using your plans, material list and excellent video we were able to construct the barn door rails and hangers using 1 ½ inch fender washers which sandwiched three 1-inch fender washers. The metal bar was sized to fit the top of the cabinet and connected to the top trim board using spacers, washers and bolts. As we decided to place a middle support for the bar, we added a t-nut into a center plywood partition so that we could use the same bolts, spacers and washers to support the rail.
As we were following a rustic theme, we decided to add the X Braces to the barn door and used a project panel board as the top. The barn door is guided at the bottom using a simple U shaped metal bracket that we lined with felt for a smooth glide.