I just made an autograph quilt this winter using black, red & white fabric for a 50th Anniv. We ask guests to autograph it. I did not treat the fabric with anything before but after everyone had signed all over the quilt, I ironed over all the signatures to set them. I tried various pens but found this one worked the best.
Sharpie Precision - ultra fine point - permanent marker purchased at Walmart - pkg of 2 - on the pens there is an
AP in a circle on it. It is easy to use - didn't bleed - I rubbed over the fabric - rolled it around & scrunched it up seeing what it would do but the writing stayed the same. I was happy with it. I would suggest trying them to see what you think. Good Luck