Originally Posted by
azwendyg
Hmm, I don't know why. In fact, often that's where I want the "invisible" part, and nobody told me I couldn't... It's working for me.
Since some of it stretches, it will wind too tightly on the bobbin and make it extremely difficult to get the bobbin off the winder. Been there..done that! It can be put in the bobbin but keep a very close eye on the winder and again, it really depends on the brand & type of invisible you're trying to use. Wendy must have one of the "tame" invisibles.