Thank you I tried this last night and it works okay but not for long. I have the Juki 98 which does about 1500 stiitches per minute and I think maybe thats the problem. After about 10 minutes or so the thread shreds and breaks repeatedly. I did try it in the bobbin and it seems to work great so far. In addition because it's thinner it held more bobbin thread. Only problem I worried about was does it hold up over the years like cotton would.