I've used wedding tulle fabric found at any arts and crafts store. It's plastic (or nylon maybe...), easy to cut and shape, takes Tamiya Thin Cement and Ambroid Proweld when you're gluing it to plastic and CA glue when attaching it to metal. It comes in a myriad of shapes and colours but diamond is most common. I have about 20 x 12" dia. sheets of it I bought for about 5 bucks. Works great.