Hi, Good question. Our church group was quilting a queen size and kept track of each hour worked on. Every hour by each person it all added up to 51 hours. It was a labor of Love and it peases the soul. So a safe guess would be about 40 to 45 hours for a double bed size. Its so relaxing the time seems to fly. As you quilt it goes faster. Remember to take small breaks and flex those muscles. Good Luck. Marvel