Since this thread is thick, you will need a large
needle - a size 100 or 110 needle works great. These needles have a
slightly larger eye which allows the thread to pass through more easily.
Unless you have an auto threader on your machine, it
can sometimes be challenging to thread the needle. Here's a tip: first
thread the machine with a length of 40 weight embroidery thread, tie it
in a knot around the thick thread, and then pull the 40 weight to lead
the thick thread through the eye. Also, you can find needle threading
tools at most sewing or craft stores. These work great too.