I wanted to mark the hand quilting lines on this new mini quilt in the shop.
This is a great tool if you make a marking mistake. Just erase it and try again. I have tested it on several threads (including floss) and the color of the thread remained the same and didn't run. My daughter found this set and has used it for marking embroidery as well as rough sketching on T-shirts prior to design painting. I think it's awesome!