I am not gonna bash or anything..Jus tstating the fact that a friend of mine who owns a styling/performance shop has made his hinges as well on his own and they are damn good quality. He spent amonth in total from idea to design and working hinges so its not impossible at all to make them on your own. However I find it hard to make in a day or two ...But as I said..it canbe done and has been done alot of times ....Of course quality shits between a "fabric" hinge and a back yard one but I am sure it could work.