Cotton thread can come in handy when you're piecing curves! The lint on cotton helps to grab onto your fabric as you work, which can actually make piecing curves a bit easier. Especially for beginners 😱 WonderFil's cotton threads are double gassed, meaning they go through a special process which gives them an extremely low lint finish. With our cottons you can stitch for longer without your machine getting clogged up or covered in lint! But, all cottons have a bit more texture to their surface