Rib Thinning, Scraping, and Sanding: The Invisible Craft Behind a Graceful Tuan Shan

The smooth, even arc of a tuan shan comes from painstaking rib preparation before bending. Thinning, scraping, and sanding each rib to a uniform taper controls flexibility and weight, so the fan opens gracefully and feels light in the hand — a craft invisible to most eyes.

The Scenario: Three challenges in rib preparation

Rib thinning and sanding faces three challenges:

Pain Points

• Ribs must taper evenly from handle to tip, or the fan arc will be uneven and stiff;
• Over-thinning weakens ribs and invites cracking, while under-thinning makes the fan heavy;
• Surface scratches from coarse sanding mar the final finish.

The Solution: Three rib-preparation techniques

Rib preparation uses three techniques:

1. Even taper thinning Thin each rib to a uniform taper so flexibility and weight stay balanced across the arc.

2. Scraping for smoothness Scrape the surface to remove tool marks and refine the curve before final sanding.

3. Progressive fine sanding Sand through progressively finer grits for a silky, splinter-free surface.

The Result: A light, graceful fan

With these techniques, the fan opens smoothly and feels light. Rib preparation is the hidden craft that separates a graceful fan from a stiff one.