a way to use large spool of thread on a standard machine. set the spool in a heavy cup and bring the thread around the spool pin so it makes a 90 degree turn to the thread guide. Set the cup directly under the spool pin.
Buttonholes are one of the scariest sewing tasks for most sewist. I have a secret to share - it's all about stabilizing. Find out how to make your buttonhole foot work perfectly! The Buttonhole Foot - The Seasoned Homemaker