Originally Posted by Scrap Happy
I read once that quilters have used slivers of bar soap to mark dark colors. Have never tried it so I can't speak from experience.
I have and it works really well. I save those motel bars of soap and sharpen the edges----and just keep sharpening as needed. I have never used any color but white (out of fear that the color might somehow stay) and all has always washed out nicely.