TL;DR: Clean your bisque porcelain vase, apply 2–3 thin coats of glaze by dipping, pouring, or brushing, then fire it to cone 6–10 depending on the glaze. Keep coats even, avoid touching glazed surfaces, and let the kiln work its magic for a glossy, food-safe finish.
Step 1: Prep Your Porcelain Vase
Start with a bisque-fired porcelain vase. Wipe away dust with a damp sponge. Check for cracks or rough spots—sand lightly if needed. Porcelain is dense and smooth, so glaze adheres differently than on earthenware. Make sure the vase is bone dry before glazing.
If you want to dig deeper, check out our guide on **Porcelain Vase Tutorial: Step-by-Step Guide for Beginners*.
Step 2: Choose the Right Glaze
Select a glaze rated for porcelain’s high firing range, typically cone 6 to cone 10. Commercial glazes labeled “porcelain-friendly” work well. Test on a small tile first. Stir the glaze thoroughly—sediment settles fast.
Step 3: Apply Glaze Evenly
For dipping: hold the vase upside down by the foot, dip for 2–3 seconds, then lift and let drip. For pouring: pour glaze inside the vase, swirl, and drain. For brushing: use a soft brush and apply 2–3 thin coats, letting each dry. Aim for a 1–2 mm thick layer. Wipe the foot ring clean with a damp sponge—glaze there will fuse the vase to the kiln shelf.
Step 4: Fire the Vase
Let the glaze dry completely. Load the vase into a kiln, leaving space around it. Fire according to the glaze’s instructions—usually a slow ramp to cone 6 or 10. Cool slowly to prevent crazing. Unload when the kiln reaches room temperature.
Tips for Success
Keep glaze coats thin; thick glaze runs and blisters. Use wax resist on the foot for easy cleanup. For a watertight vase, glaze the interior fully. Test fire a small porcelain cup first to check color and fit.
FAQ
Q: Can I glaze a porcelain vase without a kiln?
A: No. Glaze needs high heat to melt and bond. Air-dry glazes exist but are not durable for vases holding water.
Q: How many coats of glaze does a porcelain vase need?
A: Two to three thin coats, or one dip. Thicker is not better—it causes drips and firing defects.
Q: Should I glaze the inside of a porcelain vase?
A: Yes, if you plan to use it with water. An unglazed interior can seep and stain. Glaze both inside and outside for a functional vase.
Leave a Reply