Have you tried the new Frixion pens from Pilot?? Naturally they were designed for something else.. but quilters figured out they are wonderful for marking quilts. I use them to mark my redwork project. They write beautifully on the fabric then you just steam out the lines when you are done.
They are great to use.
So here is my little warning.
I have all my latest redwork squares ready for a quick pick up project. I traveled to my sisters 2.5 hrs away the other day. When I pulled out my redwork to work on many of the lines were gone. So how does that happen you ask?
The hot summer car steamed away my lines. YIKES!!!
Thank goodness I only brought one of the squares with me. It will be a quick fix to re-do the lines but may have to travel with the redwork projects in the cooler!