Originally Posted by Holice

The ceramic lead pencil is found in the fabric stores and quilt shops. It was made for fabric.
Brands are: Sewline; Fons and Porter' Bohin; Collins All are probably from the same factory.
The mehanical pencil with about 10 leads is around $15 but I believe worth the price as they mark and erase well.
There was a posting some weeks ago about the Fixon pens. As I recall, the quilter ironed the marks off, was taking it to someone and it was in a cold car and the lines came back. So don't have to put it in the freezer but a cold place. I believe someone said that if the quilt is washed you don't have the problem. On the other hand several have reported it bleaches out the fabric. It sounds like a magic marker but the side effects are not good. Then depends on how and where you use it.