>Use them to make colored scrathboards. On card clay stock (slick/shinny) color
>randomly oil pastel, dust with chalk dust and paint over with india ink, allow
>to dry and the following day when you "scratch" out the black with any sharp
>drawing tool it reveals a colored line. You can also do planned layouts but
>the rear of the board must be marked to remind you of your plan or color
This sounds like a great idea- what does the chalk dust do? is it regular
blackboard chalk dust? and how dusty is it supposed to be?