Supplies:

1 cup clean, well sifted saw dust
1/2 cup flour
1 tbsp liquid starch
1 cup water

Directions:

Mix ingredients together in a bowl until a stiff dough is formed.  Add extra water if the dough is too dry.  Allow projects created with saw dust dough to dry for 2-3 days.  Sandpaper can be used to smooth projects after they are dry.