How do you keep unassembled blocks from fraying during long-term projects?
I am getting ready to start a quilt that will have over 6000 blocks (about half of those are HST, 20% 9 patches plus a bunch of 3 strip sets to make short and long rail blocks). I expect this to take a while and won't rush it.
As I amass my blocks (25 3.5 inch blocks will make up a 15 inch finished block but I want to make all the individual blocks before I do any construction of the main blocks), I'm wondering what I can do to keep them from fraying?? I am using medium dark florals with white as my back ground fabric and I can already see a nightmare brewing with dark colored frayed fabric strand. I will be starching but the starch feeling wears off pretty quickly it seems.
What do you do in these instances?? Thanks.