In college, my boyfriend was normally appointed the master carpenter when we both attended classes in the technical section of the Theater Arts dept. He always stuck me sewing the backdrops. FINALLY, I was chosen as the master carpenter and I asked him nicely to sew the backdrops. I told him that a DSM is really a power tool. I was so pleased with the final results because there wasn't even one pucker in the entire sewn drop. It seems that it was at least 6 panels (120" wide fabric) and must have been 40 yards in length for each panel but I learned to measure a yard from my fingers to my nose slight turned away from the finger. The things we learned from college that hasn't been forgotten.