I just completed a black and white quilt. (See pics I just posted here:
http://www.quiltingboard.com/picture...t-t184776.html
I used the fons and porter chalk marker for both the white and black. I used pink for the white and white for the black. Anyways, when I washed it, there was NO trace of the chalk. What I liked was the wheel on the marker. It makes a nice slim line. Here is the website:
http://www.shopfonsandporter.com/cat...d=chalk+marker I got mine at Joanns with a coupon. Good luck.