Thoughts to keep in mind when choosing your door hinges. Good hinges are not cheap hinges. Sometimes during your build you must put quality ahead of price ie: windows, taillight lens, grilles, emblems, etc. Your hinge is ? 40" distance from your latch? Let's say you went really cheap and bought a barn door hinge from your local hardware store. Yes, it does have a little slop in it from side to side. Now multiply that movement 40" away. I think that you get the picture. Bronze bushings are good and inexpensive in building a hinge. I don't know how many openings and closings they would do before they show any wear. I have also put needle roller bearings in some hinges. You have to watch which needle bearings you purchase also. Some have caged rollers. I don't like these as the needles are spread apart from each other. I like the ones with lots of bearings next to each other. I would think that these bearings would live for decades and never need relubrication as your doors only move approx. 45ΒΊ to the opened position. I don't have any CNC equipment. My mill is a manual op type as is my old lathe. I spend 2 days building a set of hinges. Metal, bearings, stainless pins, machining, metal finish, welding, etc. It all adds up to a quality hinge. Check the quality of the hinges before you buy or make sure that you can return them if you don't like them. Expect to pay somewhere between $350-500 for hinges or you can purchase OEM for $1000 ea. OUCH!!!
Jim