Review on Clover White Chaco Liner: Precise Marking Tool, Pack of 1 - A Must-Have for Sewing and Crafts by Greg Festa

I am very happy with this Chaco marker. However, there are several tricks to using it: it only works in one direction; light pressure works better than hard pressure; and it works best when your fabric is on top of other layers of fabric rather than a solid surface. I'm not thrilled that it's filled with talc rather than chalk. The end unscrews though, so I'll probably try to fill it with cornstarch at some point.