Originally Posted by
SophieHatter
That's a good idea! Is burying it tying it off? I'm gonna have to find some Youtube videos...
Burying it is not the same thing as tying off. I usually make a quilter's knot, then gently tug the knot through the fabric so it sits in the batting.
You say this is a quilt you made when you were 10. I'm not going to presume what age you are now, but I will suggest that maybe you used cotton thread, and it's old and maybe has rotted? That is not uncommon with cotton thread. If you use polyester thread you won't have that problem.