Sovereignty Module: Narrow the Neck

Complete Vase and Bottle Making: From Wheel to Enclosed Form

Vases and bottles require collaring (narrowing) the neck, the most advanced wheel technique. This campaign covers enclosed forms, collaring, bottle profiles, and decorative approaches.

Chapter 1: Enclosed Form Types

Chapter 2: Throwing and Collaring

Vase throwing: 1) Center 2-4 pounds of clay. 2) Open and pull cylinder to desired height. 3) Shape belly: push outward from inside at desired point. 4) Belly position determines vase character (low belly = stable; high belly = elegant). 5) Begin collaring: place both hands around neck. 6) Squeeze gently while wheel turns slowly. 7) Collar in stages (1/4 inch narrower per pass). 8) Do not collapse the neck (support inside with finger or tool). 9) Shape rim: flare slightly or leave straight. 10) Rim must be smooth and even.

Chapter 3: Bottle Profiles

Chapter 4: Trimming Enclosed Forms

Trimming: 1) Wait until leather-hard. 2) Invert on wheel (use chuck for narrow-necked pieces). 3) Chuck: thrown cylinder that holds vase inverted. 4) Center carefully. 5) Trim foot ring. 6) Trim exterior to refine profile. 7) Foot ring diameter: 30-40% of belly diameter. 8) Wall thickness should be even (tap to check). 9) Enclosed forms hide interior thickness, so careful trimming is essential.

Chapter 5: Decorative Techniques

Reference Card

1. Collar slowly and gently (collaring narrows the neck by squeezing from outside; too much pressure too fast collapses the form; collar in small increments over multiple passes). 2. Support the inside during collaring (as the neck narrows, the walls want to fold inward; a finger, stick, or rib inside the neck provides counter-pressure that prevents collapse). 3. The belly position defines the character (a low belly creates a stable, grounded form; a high belly creates an elegant, top-heavy form; the belly position is the most important design decision). 4. Enclosed forms require a chuck for trimming (a narrow-necked vase cannot be inverted on the wheel without a chuck; the chuck is a thrown cylinder that cradles the vase during trimming). 5. Even wall thickness is hidden but critical (the interior of an enclosed form is invisible; uneven walls cause uneven weight, warping during firing, and potential cracking; trim carefully). 6. The neck controls the pour (for functional bottles and jugs, the neck diameter and shape determine how liquid pours; a narrow neck pours slowly and precisely; a wide neck pours quickly). 7. Vases and bottles are the potter's artistic canvas (enclosed forms offer the largest continuous surface for decoration; carving, slip trailing, and glazing transform a simple form into art). 8. The enclosed form is pottery's greatest challenge (collaring, shaping, and finishing a perfectly proportioned enclosed form requires mastery of every wheel skill; it is the ultimate test of the potter's ability).