Ampersand Scratchbord is a professional grade scratchboard and the choice of artists looking for a rigid acid-free surface that will not tear, puncture crack, or bend. Scratchbord's surface has a smooth, absorbent kaolin clay ground that is evenly coated with India ink. You can scratch easily into this surface with controlled, crisp, clean lines to create exquisitely detailed white-on-black art.
These are several tools that I have used since I have started doing scratch art. You can use just about any really small sharp object to remove the black ink layer, (Example: sewing needles, surgical needles, steel wool, etc.) Every person will develop a liking to certain tools based upon how they work and feel for themselves.