Tent doors have a boxed X sewn on the ends and just a couple rows of stitching. Heavy fabric or nylon would be a good idea. I guess you could sew a tent with a door flap on a figet quilt. How about silk? Probably not a good tent door or figet door... Think about a parachute? I would love to look at an old silk parachute to see how it is sewn. Extra layers of material can help make something sturdy. Hinges are a great idea.