Artolia Studio Journal — Pottery Basics & Studio Notes
How to Glaze Pottery: Step-by-Step Guide
Throwing or handbuilding gets most of the attention when people talk about learning pottery, but glazing is its own skill entirely — one with its own chemistry, its own timing, and its own set of mistakes. A well-thrown piece can still come out of the kiln looking disappointing if the glazing step was rushed.
This is the step-by-step process I actually use in my own studio, from prepping bisque ware through the final glaze firing.
In This Guide
- Underglaze vs. Glaze: What's the Difference
- What You Need Before You Start
- Step 1: Prep Your Bisque Ware
- Step 2: Choose Your Application Method
- How to Dip Glaze
- How to Brush Glaze
- Step 3: Clean Up Drips and the Foot
- Step 4: Let Glaze Dry Fully
- Step 5: Load and Fire
- Glaze Firing Temperatures, Explained
- Common Pottery Glaze Mistakes
- Food-Safe Ceramic Glazes: What to Look For
- Frequently Asked Questions
- Final Thoughts
Underglaze vs. Glaze: What's the Difference
These two get confused constantly, so it's worth clearing up first:
- Underglaze is a colored, matte, paint-like product applied to bisque ware (or sometimes greenware) before the final glaze — used for decoration, detail, and color work. It's typically not glossy or food-safe on its own.
- Glaze is the glassy, melted coating applied over the top, which seals the piece, adds shine or texture, and makes it food-safe and functional once properly fired.
A common approach is applying underglaze decoration first, then covering it with a clear or tinted glaze on top to seal and protect the design underneath.
What You Need Before You Start
- Fully bisque-fired ware — glaze cannot be applied to unfired greenware.
- Your chosen glaze(s), well stirred, at a consistency similar to heavy cream.
- A brush (for brushing) or a container large enough to dip your piece fully.
- Wax resist, for keeping the foot of the piece glaze-free.
- Tongs or dipping fingers, for handling pieces during dipping without leaving fingerprints in the wet glaze.
- A damp sponge, for cleaning up drips and smoothing edges.
- Gloves, since many glazes contain materials you don't want repeated skin contact with.
Step 1: Prep Your Bisque Ware
Wipe away dust
Bisque ware collects fine dust that can prevent glaze from adhering evenly. Wipe the whole piece with a slightly damp sponge before you begin.
Wax the foot
Apply wax resist to the base (foot) of the piece, and anywhere else you want to stay glaze-free. Glaze left on the foot will fuse to the kiln shelf during firing.
Let the wax dry fully
Wax resist needs to be completely dry before glazing, or it won't properly repel the glaze where you need it to.
Step 2: Choose Your Application Method
There are a few standard ways to apply glaze, and the right one depends on the piece and the effect you want:
| Method | Best For | Difficulty |
|---|---|---|
| Dipping | Even, consistent coverage on simple forms | Easy, once you have a large enough glaze bucket |
| Brushing | Detailed work, multiple colors, smaller batches | Beginner-friendly, more control |
| Pouring | Larger pieces too big to dip | Moderate — requires practice for even coverage |
| Spraying | Layered, gradient effects | Advanced — needs proper ventilation and equipment |
How to Dip Glaze
Stir the glaze thoroughly
Glaze settles quickly, so mix it well right before dipping to make sure it's evenly suspended.
Hold the piece firmly with tongs or fingers
Dip in a single, smooth motion, fully submerging the piece for a count of a few seconds.
Lift out cleanly and let excess drip off
Hold the piece over the bucket briefly so extra glaze drips back in, rather than pooling at the base.
How to Brush Glaze
Apply the first coat in one direction
Use smooth, even strokes, working in a single direction to avoid streaking.
Let it dry to the touch
Wait until the first coat is dry (usually 15–30 minutes) before adding the next.
Apply the second coat in the opposite direction
Brushing the second coat perpendicular to the first helps even out streaks and gaps.
Add a third coat if needed
Most brushing glazes need two to three full coats for even coverage and proper color development — check the specific glaze's instructions, since coat counts vary by product.
Step 3: Clean Up Drips and the Foot
Before setting the piece down to dry, check for glaze drips along the base and gently wipe or scrape off any that pooled near the foot, even with wax resist applied. A quick pass with a damp sponge along the very bottom edge helps ensure a clean release from the kiln shelf.
Step 4: Let Glaze Dry Fully
Glazed pieces need to dry completely before firing — usually a few hours to overnight, depending on humidity and how thickly the glaze was applied. Handle glazed, unfired pieces carefully; the glaze layer can smudge or chip easily until it's been fired.
Step 5: Load and Fire
Load pieces into the kiln with enough space between them that glazed surfaces can't touch each other or fuse together. Glazed pieces generally sit directly on kiln shelves (rather than stacked), and firing typically takes several hours to reach temperature, plus a slow cool-down period afterward.
Glaze Firing Temperatures, Explained
| Range | Approx. Temperature | Typical Cone | Common Use |
|---|---|---|---|
| Low-fire | ~1828–1945°F (998–1063°C) | Cone 06–04 | Earthenware; bright, vivid colors |
| Mid-fire | ~2167–2262°F (1186–1239°C) | Cone 5–6 | Stoneware; most functional dinnerware |
| High-fire | ~2305–2381°F (1263–1305°C) | Cone 8–10 | Porcelain, stoneware; deep, complex colors |
Best Clay for Beginner Potters (What to Buy First)
Always match your glaze's stated firing range to your clay body and kiln — firing a low-fire glaze to mid-fire temperatures can cause it to run right off the piece, while underfiring a glaze can leave it dull, rough, or cloudy instead of properly melted.
Common Pottery Glaze Mistakes
- Applying glaze too thick. Leads to running, pooling, and cracking during firing.
- Applying glaze too thin. Results in patchy color or a rough, underdeveloped surface.
- Forgetting to wax or clean the foot. Fuses the piece permanently to the kiln shelf.
- Mismatching glaze and clay firing ranges. Causes running, dullness, or an entirely different finished look than expected.
- Skipping a test tile. Especially with layered glaze combinations, results can be very different from what the jar suggests.
The 15 Biggest Pottery Mistakes Beginners Make
Food-Safe Ceramic Glazes: What to Look For
If a piece will be used for food or drink, look for glazes explicitly labeled food-safe, lead-free, and dinnerware-safe by the manufacturer, and fire them exactly to the recommended temperature range — underfiring can leave a glaze technically unsealed even if the label says food-safe when properly fired. Widely used commercial lines like Amaco, Mayco, and Speedball are common starting points for beginners specifically because they publish clear firing ranges and food-safety certifications on their labels.
Curious what a properly glazed, food-safe finished piece looks like? Browse the collection at Artolia Studio.
Frequently Asked Questions
How many coats of glaze do I need?
Most brushing glazes need two to three even coats for full color and coverage, though this varies by specific glaze — always check the product's instructions.
What temperature do you fire glazed pottery at?
It depends on the glaze's designated range: roughly 1828–1945°F (Cone 06–04) for low-fire, 2167–2262°F (Cone 5–6) for mid-fire, or 2305–2381°F (Cone 8–10) for high-fire.
Do I need to bisque fire before glazing?
Yes — glaze needs a bisque-fired, porous surface to properly absorb and adhere to; it cannot be applied directly to unfired greenware.
What's the easiest glazing method for beginners?
Brushing tends to be the most beginner-friendly, since it offers the most control and doesn't require a large dipping bucket.
Why did my glaze run down the piece during firing?
Usually from applying the glaze too thick, or firing it hotter than the glaze's intended range — both cause the glaze to become more fluid than expected.
What does it mean for a glaze to be food safe?
A food-safe glaze is formulated without harmful materials like lead, and properly seals the porous clay body when fired to its correct temperature, making the surface safe for food and drink contact.
Final Thoughts
Glazing rewards patience more than almost any other stage of pottery — clean prep, even coats, and matching your glaze to the right firing temperature solve the vast majority of problems before they ever reach the kiln. Start with a simple, well-documented commercial glaze, test it on a scrap tile first, and build your intuition from there.
If you'd like to see what fully glazed, fired stoneware looks like up close, browse the collection at Artolia Studio.
Source
- Glaze application, firing temperature, and cone system references from established ceramic arts education resources.
- Food-safe glaze and lead-free certification guidance from ceramics safety and studio pottery organizations.
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