Downward Pressure in Coil Building

When coil building, joining coils downwards by pinching and smoothing them into the previous layer is a crucial technique. This downward technique, often referred to as "bonding pinch," creates a strong and seamless connection between the coils, preventing cracking and ensuring structural integrity.

Scoring and Slipping:

Before attaching a new coil, it's beneficial to score the top edge of the existing coil and the bottom of the new coil with a tool or by scratching it with a fork. Then, apply a thin layer of slip (watered-down clay) to both surfaces. This acts as a "glue" to help the coils bond together.

Bonding Pinch:

When joining the coils, use your fingers to press down firmly on the new coil, pushing it into the scored and slipped surface of the previous layer. This downward motion helps blend the clay and eliminate any gaps or weak spots.

Smoothing and Compressing:

After the bonding pinch, use your fingers or a rib to smooth the surface of the clay. This movement helps compress the clay’s particles preventing cracking.