Porcelain sculptures are delicate works of art, and a weak or damaged base can compromise their stability and longevity. Whether due to age, accidental damage, or inherent structural flaws, addressing this issue requires careful techniques to preserve the artwork. Here are the most effective ways to stabilize a porcelain sculpture with a fragile base:

1. Epoxy Resin Reinforcement: For hairline cracks or minor weaknesses, a clear epoxy resin can be applied to the interior or underside of the base. This creates a strong, nearly invisible bond that reinforces the structure without altering its appearance.

2. Internal Support Rods: For larger sculptures, inserting thin metal or fiberglass rods into the base (drilled carefully to avoid further damage) can provide core stability. The rods should be secured with museum-grade adhesives.

3. Custom Base Mounting: Attaching the sculpture to a weighted or broader base (like wood or acrylic) distributes pressure evenly. Use archival-quality adhesives or silicone pads to avoid direct stress on weak points.

4. Professional Kintsugi Repair: If the damage is artistic rather than purely structural, the Japanese kintsugi method—repairing cracks with gold-infused lacquer—can stabilize while enhancing aesthetic value.

5. Preventive Measures: For sculptures with minor instability, applying a protective wax or sealant to the base can prevent further degradation. Regular dusting and avoiding humidity fluctuations also help.

Always test adhesives or techniques on an inconspicuous area first, and consult a professional conservator for valuable or antique pieces. With these methods, your porcelain sculpture can regain stability while maintaining its artistic integrity.