The pearls fared better than than the thread. To my eye the knots look the same, but the macro view says they are a bit roughed up. But this was far more intense wearing than anyone gives their solid nacre pearls. So, don't worry about it, your CFWP will hold up great. They are tough and resilient and actually love water.
Someone want to try that with silk? Or linen? Or Griffon. (lots of colors)I'll put this back on for another year, if someone wants to test silk against powerpro on some inexpensive, but pretty fw's?.
You know I have been recycling since 1971, and for many years disdained plastic items and always tried to get something not plastic. So, it was cotton, silk or sinew for me when it came to beading thread.
I really did not lighten up on this ideology, until I tried to knot the infamous "Lumps of Coal Necklace" These very rough, round, dyed black pearls of 14-17 mm stretched the silk. I just saw a photo of it today, maybe on this thread?