The size needle depends on the ply and weight of the thread. Here is a great chart for matching thread to needles:
https://www.superiorthreads.com/medi...HOME_12-11.pdf
I agree the
Titanium topstitch needles from Superior Threads are the best needles. They are Organ needles. https://www.superiorthreads.com/prod...chine-needles/
Last edited by BellaBoo; 10-13-2012 at 01:38 PM.