That depends on what you are making. If you need advice, ask a well trained Joann Fabric salesperson. They take great pride in the knowledge they have about sewing and fabrics and notions and accessories. If you have a question, it’s a good idea to bring the pattern along with you to the store, and anything else that might pertain like buttons or zippers. The more information you are able to give the salesperson, the more complete an answer she can give you. She can take you around the various threads and notions and explain why one thing works better than another in different sewing projects. She can also point you in the least expensive direction. They have the knowledge and the experience to know what will work and what you don’t need, so you don’t have to buy unnecessary items for your project. Also be sure to bring your Joann Fabric coupons.