Build a coil cylinder (15 cm tall)

Time to stack. Start with a pinched or slab base, then build straight up using coils.

Specifications

• Target height: ~15 cm
• Straight walls (not leaning in or flaring out)
• Score and slip every single join
• Smooth the interior completely with a rib or your thumb

Layer by layer

• Place coil → score & slip → press firmly → smooth inside
• Let each 3–4 rows firm up slightly before adding more (prevents slumping)
• Keep walls roughly even thickness throughout

The outside can show the coil texture or be smoothed: your choice.