I just posted an inquiry about thread and the epoxy separating (silke nylon)
I use primarily size A and B. I can only find the B sizes on the internet and that is turning out for me to be a crap shoot and lately more crap. It seems the garment industry dumps thread they can't use and call it rod wrapping thread. You can wrap a rod with it but the epoxy won't stick. Where do I find the B size that epoxy will stick to.

Some manufacturers of sewing threads actually make,and market suitable threads for use in rebuilding. They are untreated for machine usage,as is often the case with sewing or embroidery thread.
You may wish to experiment with the "unsuitable" threads on scrap blank sections or dowels. Wrap the threads and then apply several coats of color preserver. This will encapsulate any potential contaminant,and allow the epoxy finish to do it's intended job.

As for your previous post about nylon silk thread, I don't understand it. Nylon is a synthetic man-made material whereas silk is a natural fiber from which silk thread is created.

ProWrap has nylon wrapping thread in sizes A, B, and D. Pretty good color selection, and I have no problems using it.
[www.mudhole.com]
Norm

My tutor said that you don't need to worry about D thread as it is just for seriously heavy deep sea rods

Many of the suppliers on the left have size B