These work-of-art stepping stones
are one of a kind.

The Project

• Oil-base modeling clay
• Sharp knife
• Plywood work board
• Pencil and paper
• Mold latex (available at art supply stores)
• Nonstick cooking spray
• Pot for boiling water
• 4-6 feet of 1x3 pine boards
• Wood screws
• Masonite board
• Concrete mix
• Latex paint (if color is desired)
• Brick fragment (for sanding edges)

Steps 1, 2, and 3

1. Create your design. Roll oil-base modeling clay to 1/4-inch thickness on a work surface. Draw desired patterns on paper and place them on the clay. Cut around each pattern with a knife. Place clay pieces on an uncut copy of a stepping-stone size paper pattern (about 12x12 inches), which has been glued to a plywood work board. Sculpt a design model by shaping and joining clay pieces. Spritz with nonstick cooking spray.

2. Prepare the mold. Brush a thin layer of mold latex over the surface of the clay model. Apply slowly to prevent air bubbles. Dry overnight and repeat the process until the mold reaches 1/4-inch thickness (20-25 coats for reusable molds). When thoroughly dry, remove mold from the clay model and boil for 10 minutes to strengthen the latex.

3. Build a frame. Make a shallow square box to hold the rubber mold. For the box frame, use 1x3-inch pine furring strips cut to the size of the mold, and secure strips with screws. Use a square of Masonite for the bottom of the box. Insert rubber mold, design side up, in box.