In the process of cutting basalt stone, the friction causes a clay-like texture as an extra result. This substance dries up as fine lava dust. I saw potential within the fine dust. Could it be shaped into a desired form? By using the laser cutter I experimented by engraving the dust. It shows the potential of a continuous exploration of shaping 3d layers of lava dust into a 3d form. The result is volcanic glass or obsidian, produced when lava extruded from a volcano cools rapidly with minimal crystal growth.