how about the good news first:
I found a source for WHITE flax twine.
bad news:
it would cost double that of the cotton
so instead of $2/hank+$2/ply it would be $4/hank+$4/ply.
and, its probably a bit too big to make something that compares to the 1-ply i've been making.
why flax? well, its stronger than cotton by a few orders of magnitude.
stronger means I can possibliy make it smaller and closer to the original sizes of Belfast cord.
and isn't that what its really all about? ;)
Although, this may require that I "deconstruct" the yarn into smaller groups of threads, its a small price to pay for my craft. sure beats bleaching.
I also found a source for what is being called 2-ply natural flax twine. not much info on it but they are selling this stuff at the same cost as the cotton that i've been buying, which is approaching a miracle. its not white, but dang it sure is cheap for flax twine. I've got an inquiry in for more info on this stuff. There was no indication of the twine's size, the yardage on the spool or anything other than its weight. If it is small enough, I might be able to make some natural (lt brown) colored cord that is similar to the stuff that i've been making. My guess is that it would at least make a size cord similar to my 3-ply cotton, if not smaller. I'm waiting patiently for two different inquiries to be replied to. If it is available in the right size, im sure I could be convinced to bleach it. Between those two things, I think I've got a good chance of finding a suitable flax source that won't break anybody's bank. And, believe me, when you find stuff for $45 a pound it gets a little intimidating.
I just recently bought 4000 feet of ~1mm hemp twine. making a 1-ply line of this resulted in something very close to the 3-ply cotton. This hemp also seems to be made of 2 plies. the problem with this hemp is that it is rough with random irregularities that caused bulges in the finished line. that twine was listed as 20#. they also make an 8# but it only comes in much smaller rolls. I might try that to see how it compares in size.