Use the best quality thread you can find.
Best thread for machine piecing quilts.
All cotton threads are readily available and are the best choice for piecing our quilting fabrics.
Help avoid future wear at the seams by choosing a thread that s no stronger than the fabric.
Generally speaking cotton fibers are also softer and more pliable than most other fibers.
That means it s best to avoid polyester threads and overly strong cotton threads.
Most quilters prefer cotton thread when it comes to piecing the term piecing is used more than sewing because the sewist is piecing together their quilt blocks because cotton fibers have a high heat tolerance and is therefore iron safe on high heat.
40 weight cotton aurifil s thread weight is determined by something called number english or ne.
Under this system the lower the number the thicker the thread.
Ne is a measure of linear density and refers to the number of hanks of skein material that weigh 1 pound.
It s the thread shown in the big cone and is a great neutral for piecing.
You should be able to use two colours of piecing thread.
I use the cream thread for light fabrics and the grey for darker ones.
A cream or neutral colour and a light grey.