Love mine when I remember to use it. I have a hard time doing crosshatch, but used it to mark lines on a pillow and it helped immensely. Thanks for reminding me I have one..

Tartan, kathy, QuiltMom, thanks for the input on my little jade thing. It seemed too short to be a letter opener but a paper creaser - that would fit.
Also, I'm about to sew with silk for the first time (dress) & will experiment using it to trace my pattern on the fabric. Doing a muslin first.