TL;DR: To create a porcelain figurine, you must hand-build or slip-cast a form from porcelain clay, then fire it twice—once for bisque and once after applying glaze—at high temperatures. This guide walks you through design, forming, drying, and firing steps to produce a durable, translucent sculpture.
Step 1: Design and Armature
Sketch your figurine from multiple angles. Porcelain shrinks 12–15% during firing, so scale your design up accordingly. For thin limbs or tails, build a wire armature (aluminum or nichrome) to support the clay. Keep forms hollow or no thicker than 1 cm to prevent explosions in the kiln.
If you want to dig deeper, check out our guide on How to Make Porcelain Figurines: A Beginner’s Tutorial.
Step 2: Prepare Porcelain Clay
Use a fine-grained porcelain body (e.g., cone 6–10). Wedge the clay thoroughly to remove air pockets. Porcelain is sticky and less plastic than stoneware—work in small sections and keep your hands damp, not soaked. If slip-casting, mix porcelain slip to a cream consistency and pour into a plaster mold.
Step 3: Form the Figurine
For hand-building, pinch or coil the body first, then add details like head, arms, and drapery using slip (clay + water) as glue. Score and slip every joint. For casting, pour slip into the mold, wait 10–20 minutes for a wall to form, then drain excess. Let the cast piece leather-hard before demolding.
Step 4: Refine and Dry Slowly
Once leather-hard, carve fine details with loop tools. Smooth surfaces with a damp sponge or silicone shaper. Dry the figurine under plastic for 3–7 days, poking small holes in the plastic to release moisture gradually. Rushing drying causes cracks—porcelain is unforgiving.
Step 5: Bisque Fire
Place the bone-dry figurine in a kiln. Fire slowly to cone 06–04 (about 1000–1060°C) with a 2-hour hold at peak. This bisque stage makes the piece durable enough to handle. Let the kiln cool completely before opening.
Step 6: Glaze and Glaze Fire
Apply porcelain glaze by dipping, brushing, or spraying. Wipe glaze off the bottom to prevent sticking. Fire to cone 6–10 (1200–1300°C) depending on your clay and glaze. This high fire vitrifies the porcelain, giving it translucency and strength. Cool slowly to avoid thermal shock.
Tips for Success
Keep a spray bottle handy—porcelain dries fast. Use a heat gun only on low setting. Test fire small tiles first. If a piece cracks, save the shards for glaze tests. Always wear a respirator when mixing dry clay or glaze.
FAQ
Q: Can I use air-dry porcelain clay instead of kiln-fired?
A: No. True porcelain requires high-temperature firing to vitrify. Air-dry “porcelain” is polymer clay or resin and will not have the same translucency or durability.
Q: Why did my figurine explode in the kiln?
A: Trapped moisture or air pockets. Ensure the piece is bone-dry, walls are even, and firing ramp is slow (under 100°C per hour up to 600°C).
Q: How do I fix a crack after bisque firing?
A: Use porcelain repair slip or a mix of bisque dust and glaze, then refire. For structural cracks, consider filling with epoxy after glaze firing for display pieces only.
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