Compress the rim on three cylinders

An uncompressed rim cracks. A well-compressed rim is smooth, rounded, and satisfying to touch.

The drill

Throw three short cylinders (200 g each). On each one, practice compressing the lip:

• Use a damp chamois or your finger and thumb
• Fold the rim clay slightly inward as you compress
• The wheel should be spinning at moderate speed

What you're looking for

• Smooth, rounded rim with no sharp edges
• No thin spots or tears
• The rim should feel pleasant to run your finger over: this is where someone's lips will touch if it's a mug

Three pots, three chances to nail it. The third should feel natural.