How to Bubble Glaze

Bubble glazing is a popular method of pottery decoration that results in a glossy, bubbly texture on the surface of the piece. It involves applying bubbles of glaze to the surface of the pottery before firing it in a kiln. This technique can add depth and visual interest to your pieces, making them stand out among other glazed pieces.

In this guide, we will go over the steps for how to bubble glaze and share some tips and tricks to help you achieve beautiful results. So if you’re ready, let’s get started!

Why Bubble Glazing?

Bubble glazing is a versatile technique that allows for endless possibilities in terms of creativity and design. It can be used on any type of clay body and with a variety of glaze colors to create unique and visually stunning pieces.

The bubbles in the glaze can add texture, depth, and movement to a piece, making it more visually appealing. Moreover, bubble glazing is relatively easy to do and does not require any special tools or equipment. It’s also a great way to use up leftover glazes or experiment with new color combinations.

Tools and Materials You Will Need to Bubble Glaze

• Pottery Wheel or Clay Slab (for shaping the piece)
• Glaze (in your desired colors and consistency)
• Small Bowl or Container (to mix glaze in)
• Straw or Bubble Wand (to create bubbles)
• Kiln and Kiln Shelf
• Tongs (for handling hot pieces)
• Protective Gear such as Gloves, Apron, and Eye Protection

8. Brush or Sponge (for applying a base coat of glaze)

Step-by-step Guidelines on How to Bubble Glaze

Step 1: Prepare Your Pottery Piece

Before starting the glazing process, make sure your pottery piece is completely dry and free of any dust or debris. If necessary, smooth out any rough edges or surfaces using a sponge or sandpaper. Preparing your piece properly will ensure that the glaze adheres evenly and smoothly. If you’re using a pottery wheel, shape your piece into the desired form and let it dry completely before moving on to the next step.

Step 2: Prepare Your Glaze

Mix your glaze thoroughly in a small bowl or container. If the consistency of your glaze is too thick, add a small amount of water to thin it out. You want the glaze to be slightly runny but not too watery. Also, make sure there are no air bubbles in the glaze mixture as they can interfere with creating bubble patterns. Preparing your glaze properly is crucial for achieving the desired results.

Step 3: Apply a Base Coat of Glaze

Using a brush or sponge, apply a base coat of glaze to your pottery piece. This will act as a foundation for the bubble glazing and help the bubbles stick to the surface. You can use any color or multiple colors for the base coat. Make sure to apply the glaze evenly and let it dry completely before moving on to the next step.

Step 4: Create Your Bubbles

Using a straw or bubble wand, blow air into your glaze mixture to create bubbles on the surface. You can also use your fingers to gently tap the surface of the glaze to create clusters of smaller bubbles for a different effect. Experiment with different techniques and patterns to find what works best for you. If the bubbles are not forming, your glaze may be too thick. Add a little more water to thin it out and try again.

Step 5: Apply Bubble Glaze

Once you have created enough bubbles on the surface of your piece, use a brush or sponge to carefully dab or roll them onto the piece. You want to avoid flattening the bubbles as much as possible, so be gentle with your application. You can also use a straw or bubble wand to pop any larger bubbles and create more variation in the texture.

Step 6: Fire Your Piece in the Kiln

After you have finished glazing, let your piece dry completely before placing it in the kiln. Use tongs to handle the hot pieces and place them on a kiln shelf. Make sure to follow the firing instructions for your specific glaze and clay type.

Once fired, let your piece cool down before removing it from the kiln. This final step is crucial for sealing the glaze and achieving the glossy, bubbly effect. Make sure to wear protective gear and follow all safety precautions when firing your pottery.

Following these simple steps and experimenting with different techniques can help you achieve unique and beautiful bubble-glazed pieces. Don’t be afraid to play around with colors, patterns, and textures to create one-of-a-kind masterpieces. With practice and patience, you will become a pro at bubble glazing in no time!  So gather your tools and materials, let your creativity flow, and have fun bubble glazing! Happy potting!

Additional Tips and Tricks to Bubble Glaze

1. If you want to achieve a glossy finish on your bubble-glazed item, try using a glaze that contains lead. This will give your piece an extra shiny look, but be careful when handling and using the glaze as it can be harmful if ingested.

2. To create a marbled effect with different colors of glaze, you can mix them before applying them to your piece. Use a toothpick or skewer to swirl the colors together for a unique and beautiful design.

3. Don’t be afraid to experiment with different types of glazes, such as metallic or crackle glazes, to add texture and interest to your bubble-glazed pieces.

4. For a more professional-looking finish, try using multiple layers of glaze. Let each layer dry completely before applying the next one, and then add a final clear glaze on top for added shine and protection.

5. If you are using bubble glaze on a functional item, such as a mug or bowl, be sure to only apply it to the outside of the piece. This will prevent any potential health hazards from ingesting the glaze.

6. If you want to add a pop of color to your bubble-glazed piece, try using colored glazes instead of just clear ones. This will create a bold and eye-catching result.

7. To prevent any unwanted drips or runs in your glaze, be sure to apply it in thin and even layers rather than thick globs.

8. For easy clean-up, use disposable brushes or sponges when applying bubble glaze. This will save you the hassle of trying to clean off hardened glaze from your tools.

9. If you are using a kiln to fire your piece, be sure to follow all safety precautions and instructions carefully. Always wear protective gear and keep a fire extinguisher nearby in case of any accidents.

Following these tips and tricks will help you achieve beautiful and successful bubble-glazed pieces every time. Remember to always have fun and experiment with different techniques to create unique and personalized designs. Happy glazing! 

Things You Should Consider About Bubble Glaze

1. The Type of Glaze:

When it comes to bubble glazing, the type of glaze you choose plays a crucial role in achieving the desired effect. There are various types of glazes available in the market, such as high-fire or low-fire glazes, matte or glossy finishes, and transparent or opaque options. Each type will result in a different look and texture, so it’s essential to choose the right one for your project.

2. The Firing Temperature:

Bubble glazing requires a specific firing temperature to achieve the desired effect. Generally, this technique works best with high-fire temperatures ranging from cone 6 to cone 10.

However, some artists have experimented and found success with lower-firing temperatures as well. It’s essential to do some tests beforehand to determine the right firing temperature for your particular glaze and clay combination.

3. The Clay Body:

The type of clay you use can also affect the outcome of bubble glazing. Some clays are more porous than others, which allows air bubbles to form and create the desired effect. For example, stoneware clays tend to work well for bubble glazing due to their higher silica content. However, it’s worth experimenting with different clay bodies to see which one gives you the best results.

4. The Application Method:

There are several ways to apply bubble glaze, and each method can result in a different look and texture. Some artists prefer brushing on the glaze, while others choose to pour it on. Some even use a spray gun for a more controlled application. It’s essential to consider the desired outcome and experiment with different application methods to achieve the perfect bubble glaze effect.

5. The Bubble Size:

The size of bubbles in your glazed piece can also play a significant role in its overall appearance. Bigger bubbles tend to create a more dramatic effect, while smaller bubbles can give a subtle texture. You can control the size of bubbles by adjusting the thickness of your glaze layer, the firing temperature, and even the type of glaze used.

6. The Bubble Distribution:

Another aspect to consider is the distribution of bubbles on your glazed piece. Some artists prefer a clustered look with bubbles concentrated in certain areas, while others aim for a more even distribution. This can also be controlled by the glaze thickness and firing temperature, as well as the application method used.

7. The Surface of Your Piece:

Bubble glazing works best on smooth surfaces, as air bubbles won’t form on rough or uneven surfaces. Therefore, it’s crucial to prepare your piece properly before glazing. Make sure to smooth out any bumps or rough patches, and clean the surface thoroughly to ensure the best results.

This step is especially important if you are using a transparent glaze as any imperfections will be visible.

8. The Number of Layers:

Achieving the perfect bubble glaze effect often requires multiple layers of glaze. Each layer adds more depth and texture, so it’s essential to consider how many layers you want to apply. Keep in mind that too many layers can lead to an overload of bubbles and a less desirable outcome. It’s best to experiment with different layering techniques and find the right balance for your piece.

Following these considerations and experimenting with different techniques and variables will help you achieve the perfect bubble glaze effect in your ceramic pieces. Remember to always test beforehand and have fun with the process, as every piece will turn out unique and beautiful in its way. Happy glazing! 

Maintenance Tips for Bubble Glaze

1. Regular Cleaning:

It is important to regularly clean your bubble glaze surfaces to maintain their shine and prevent any build-up of dirt or grime. Use a mild soap and water solution to wipe down the surface, avoiding abrasive cleaners that can damage the glaze. This will also help prevent any stains from setting in and keep your bubble glaze looking like new.

2. Avoid Harsh Chemicals:

Bubble glaze is a delicate material that can easily be damaged by harsh chemicals. When cleaning, avoid using strong chemicals such as bleach, ammonia, or vinegar. These can cause the glaze to become dull and lose its shine over time. Stick to gentle cleaners and always test them in a small, inconspicuous area before using them on the entire surface.

3. Use Soft Clothes:

When cleaning your bubble glaze surfaces, be sure to use soft cloths or sponges. Avoid using abrasive materials such as steel wool or scrub brushes, as these can scratch and damage the glaze. Microfiber cloths are a great option for cleaning bubble glaze, as they are soft and gentle while still being effective at removing dirt and grime.

4. Remove Stains Immediately:

If you happen to spill something on your bubble glaze surface, it is important to clean it up immediately. Any acidic or staining substances such as coffee, wine, or citrus juices can cause permanent damage if left on the glaze for too long. Use a damp cloth and mild soap to clean up spills as soon as they happen to prevent any discoloration or etching.

5. Avoid High Temperatures:

Bubble glaze is sensitive to high temperatures, so it is important to avoid placing hot items directly on the surface. Always use trivets or hot pads when placing hot dishes, pots, or pans on your bubble-glaze countertops or tables. This will prevent any heat damage and keep your glaze looking flawless.

6. Repair Any Chips or Cracks:

If you notice any chips or cracks in your bubble glaze surface, it is important to repair them as soon as possible. Small chips can quickly turn into larger cracks, which can be more difficult to repair and may require replacing the entire surface. Contact a professional if you are unsure how to properly repair any damaged areas.

7. Seal Your Bubble Glaze:

To protect your bubble glaze surfaces from stains and damage, it is recommended to seal them every few years. This will help maintain the shine and durability of the glaze, and make it easier to clean. Be sure to use a sealant specifically designed for bubble glaze surfaces for best results. This will also add an extra layer of protection against scratches and wear.

Following these maintenance tips will help ensure that your bubble glaze surfaces stay in top condition for years to come. With proper care and attention, they can continue to add a unique and beautiful touch to any room in your home. Remember to always handle bubble glaze with care and avoid using harsh chemicals or materials when cleaning, and you will be able to enjoy its beauty for many years.  

Frequently Asked Questions

How Do I Prepare My Ceramic Piece for Bubble Glaze?

First, make sure your ceramic piece is clean and free of any dust or debris. Then, apply a base coat of glaze in a color of your choice to the piece using a paintbrush. This will create a smooth surface for the bubble glaze to adhere to.

How Do I Create Bubbles for Bubble Glaze?

To create bubbles, you can either blow through a small straw into the glaze or use a bubble wand to dip into the glaze and then gently blow onto the ceramic piece. Experiment with different sizes of bubbles for a varied effect.

How Do I Apply Bubble Glaze?

Once you have created your bubbles, take the bubble wand or straw and press it gently onto the surface of your ceramic piece. This will transfer the bubbles and create a textured look. You can also use your fingers to gently press the bubbles onto the piece.

How Do I Achieve Different Effects with Bubble Glaze?

To achieve different effects, you can experiment with using different colors of glaze for the base coat and for creating the bubbles. You can also vary the size and placement of the bubbles on the piece to create a more dynamic look.

Conclusion

Now you know how to bubble glaze and create unique and eye-catching ceramic pieces. Experiment with different colors, techniques, and tools to achieve the desired effect. With practice, you’ll become a master at creating beautiful bubble-glazed pieces that will impress everyone who sees them.

Keep exploring and have fun with this fun and versatile glazing technique!  So why wait? Get started on your next bubble glaze project today!  Happy glazing!