OO is the thinest and can be snapped easily with your hands. That is why I reserve it for repair work on little tiny beads.
O is the next size up. With a bit more force it can also be snapped, but when run thru the beads several times, it becomes strong in numbers. Because it is so thin, it will knot easily.
B is the next size up. A medium weight. Much more force would be required to snap it. I can't do it, but I have seen it done. It is strong, yet still thin enough to make several passes thru the hole. Even on Czech 11's you can pass it thru about 8 times on size 13 needle. Maybe 6 times on a 12 needle before you would start getting stuck.
D is the next size up. I think it would cut into your flesh before it would snap. It is about 1 1/2 times thicker than B, so your thread passes decrease rapidly.
F is the next size up. I would compare the thickness to waxed dental floss.
Nymo on the cone or spool is different from Nymo on a bobbin. The bobbin variety is flatter, makes it easier to thread, but it will also begin to fray on you after time. Work with shorter lengths to help avoid this. Nymo on the cone is a rounded fiber. Harder to thread (unless you drag it between your front teeth to flatten it) but it doesn't fray as easily.
I rarely use a thread conditioner, and if I do it would be Thread Heaven. Beeswax will attract dirt and will clog the holes of your beads.
Always thread your needle with the piece of thread that is coming off the bobbin or spool. You can remember to do this by threading your needle first, and then cutting your length of thread.
If you use Thread Heaven, pass your thread thru it twice and then using your fingernail run it down the entire length of thread. This activates the anti-static coating.
John James beading needles (the kind I recommend) are commonly available in 10,
12, 13 & 15. 10 being the largest. There are also sharps beading needles available in 10 & 12. Sharps are more commonly used for stitching into fabric, but lots of beaders like to use them to weave with also. They are about 3/4 of the size of a standard beading needle, so they don't bend about as much.
You can thread a B Nymo through a 15 needle, but it's not much fun! ;o) I reserve my 15's for repair work. I will use 13's when I need to get thru some tight spaces. OO, O, B thread. I use size 12 for almost everything else. All sizes of thread, but the F would be difficult. Once in a while I will use a 10 if I know I won't be using a seedbead smaller than a size 11. All sizes of thread.
Hope this is helping you out, Jerri.
Beki
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