TL;DR: This beginner’s guide walks you through creating a simple porcelain vase using slip casting, from preparing molds to glazing and firing. Follow each step carefully, keep your workspace clean, and your first porcelain vase will be ready in a few days.
Step 1: Gather Materials and Prepare Your Workspace
Collect porcelain slip, a plaster mold, a pouring jug, a fettling knife, sponges, and a clean work surface. Porcelain slip is finer and more fluid than stoneware, so stir it gently before use to avoid air bubbles. Cover your table with plastic sheeting and keep water nearby for cleanup.
If you want to dig deeper, check out our guide on Porcelain Vases & Health: Hidden Risks in Your Home Decor.
Step 2: Pour the Slip into the Mold
Secure your two-part plaster mold with rubber bands and slowly pour the porcelain slip through the opening. Tap the mold gently to release trapped air bubbles. Let the slip sit until a wall thickness of about 5–6 mm forms — usually 10–20 minutes for beginners.
Step 3: Drain and Unmold
Pour out the excess slip back into your container, then let the mold rest until the clay firms up slightly. Open the mold carefully and lift out your vase. Handle it with both hands — porcelain is delicate at this stage.
Step 4: Clean and Refine
Use a sponge and fettling knife to smooth seams and clean the rim. Porcelain shows every fingerprint, so work with clean hands and minimal touching. Let the vase dry slowly under plastic to prevent cracking.
Step 5: Bisque Fire, Glaze, and Fire Again
Bisque fire your vase according to your clay’s instructions, then apply a porcelain-appropriate glaze. Fire again to maturity. Tips: test glaze on a small tile first, and always fire porcelain slowly to avoid thermal shock.
FAQ
Q: Can beginners really work with porcelain?
A: Yes — slip casting is the most forgiving method for beginners because the mold shapes the vase for you.
Q: Why does my porcelain vase crack while drying?
A: Uneven drying causes stress; dry your vase slowly under plastic and avoid drafts or direct heat.
Q: What glaze works best on porcelain vases?
A: Clear or translucent glazes suit porcelain’s white body best, but always test fire a sample first.