



...can be used as a template when pressed into a slab of styrofoam. These "grout lines" are then traced over with masking tape.

After painting the slab with gray exterior latex paint, the masking tape is removed.

The "grout lines" are then painted with black spraypaint. The acetone in the paint melts the unpainted styrofoam, creating recessed "grout lines" between the "stones".

Dave displays the finished section!

After everyone had shoved copper wire into a soldering iron, we all took turns cutting and carving on a scrap of styrofoam.