Creating a satin or semi-gloss finish on porcelain sculptures enhances their visual appeal and tactile quality. Here are the most common techniques used by artists and ceramicists:

1. Ceramic Glazing: Applying a satin or semi-gloss glaze is the most straightforward method. These glazes contain fine particles that diffuse light, creating a soft sheen without high reflectivity. Firing the sculpture at the recommended temperature ensures durability.

2. Polishing with Abrasives: For unglazed porcelain, polishing with fine-grit sandpaper (600-1200 grit) or diamond pads can achieve a semi-gloss effect. This mechanical method smooths the surface to a subtle shine.

3. Wax Application: Buffing with a non-yellowing wax or resin-based sealant adds a delicate satin luster. This technique is ideal for sculptures requiring a matte-to-gloss gradient.

4. Oxide Washes: Thin layers of metallic oxides (e.g., iron or cobalt) mixed with a clear glaze can produce a semi-gloss finish when fired, adding depth and subtle shimmer.

5. Burnishing: Rubbing the surface with a smooth stone or tool compacts the clay particles, yielding a natural semi-gloss sheen. This traditional method works best with high-density porcelain.

Each technique offers unique aesthetic and functional benefits, allowing artists to tailor finishes to their creative vision. Experimentation with combinations often yields the most striking results.