A lot depends on what size model you are building. I simulated the stitching on my Ziroli Dr1 using thread. I took about an 8 foot length of white thread and soaked it in a can of nitrate dope for a few minutes. I took a pine board about 2FT X 6inches, and put 8 finishing nails at each end of the board (Parallel to the 6 inch end, about 1/2 inch in from the end.) I then took the thread out, and stretched it out zig zag fashion back and forth along the board, making sure the thread doesn't touch the board. After the thread was dry, I cut the curved ends off, so I had 8 long pieces of spaghetti. Then I bundled them together, and cut them to the appropriate length (1/4 inch looked about right for the Dr1). I then applied each thread "Stitch" individually with a fine brush and more nitrate dope. (The fuselage was covered with Sig Koverall and nitrate dope). Once they were dry, I applied one more coat of nitrate, and then the colour. A lot of work, but it came out looking really good. I have a close up that I will post when I get home from work tommorrow morning.