I just finished a queen sized Lone Star/Corner Stars, that I also did a lot of machine embroidery on. Sadly most of the mitered corners have blue line marker that refuses to come out, some worse than others.
I used a Dritz Mark-Be-Gone washable blue marker. It washed out every where else & I had many many blue marks on this quilt. I have tried cold water, alcohol, peroxide, a peroxide/baking soda/dawn mix, vinegar, etc. None worked.
I think I made the mistake of ironing the mitered corners.
I purchased the Blue Line Eraser product & it won't even take the blue lines out
. I have washed the quilt 5 times. I made it for a friend, who lives several states away & need to get it shipped soon.
The fabric & thread are both 100% cotton & are a cream color that has the blue lines. See photo.
I'm open to suggests.
Feather3