I tried free motion quilting with Sulky Blendables - which is 30 weight. The bobbin was Mettler Metrosene, I don't know what the weight of that is.
The thread broke every 4 inches or so, shredded at the needle. I am using the special fmq foot and bobbin case for the Janome 6600, and a
90/14 needle. Tried different needles, (100) and that made no difference.I changed the top thread to a 40-wt sulky rayon, and had no problem.
I had no problem doing the straight quilting with the Blendable and this bobbin thread.
Has anyone used this thread for FMQ? If so, what did you use in the bobbin? I usually use regular bobbin thread, have not tried that yet but am going to today.