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Penguin Pottery’s glazes offer a huge range of effects to choose from: vivid, bright, smooth, glossy, textured, satin, matte; opaque, semi-opaque, semi-translucent, translucent, flowing, non-flowing.
Our low fire glazes are perfect for school projects, classrooms, studios, and potters who do not fire at high temperature. These low fire glazes are the potter’s choice when looking for a wide palette of colors, like celadon, lively reds, deep greens, bright blues.
Our mid fire glazes offer similar ranges but also introduce interesting effects and tonality not available in low fire glazes.
How to Get Great Results with Our Glazes
Mix Well Before Using
Sometimes glaze contents will settle. That's normal! Just like house paints, ceramic glazes need to be fully mixed to ensure smooth consistency. We recommend mixing well for at least 1-2 minutes.
Choose How to Apply
You can apply glazes either by (a) dipping your bisqued piece into the glaze or (b) brushing it on. Our glazes are ready to apply with a brush. If you're looking to dip, we recommend applying a dispersing agent like Darvan.
Remove Dust from Bisque
Removing all dust from your bisque-fired piece is critical to ensure a good outcome. Clean moist sponges are best. Make sure your piece is completely dry before glazing!
Fire Glaze to Correct Cone
Ceramic glazes are classified according to a temperature range ("cone") in three general groups: "low-fire," "mid-fire," and "high-fire." Over-firing will damage the piece/possibly the kiln, and under-firing will just give you ugly results.
A Note on the Art of Glazing Ceramics
One of the fascinating aspects of ceramics is the slight variations we can achieve by using different clay bodies, glaze types and firing methods. It's like vintage film photography - you don't know what it'll look like until you get it out of the kiln! Glazes will react differently (and look different) depending on several factors, including:
- The temperature at which they're fired: even small changes in temperature can lead to different outcomes.
- The clay body on which the glaze is applied: the same glaze will look different if applied to a darker vs. lighter clay.
- The speed at which your kiln reaches the target temperature.
- How much oxygen is in the kiln's atmosphere while firing.
That is why ceramics is an art! We recommend you experiment with different approaches and, most importantly, embrace the uncertainty. You will have a lot of fun seeing different results!
About Penguin Pottery
- Employee Owned and US-Based: our company was founded by and run by potters. We conscientiously manufacture our products in New Hampshire, USA. We love getting our hands dirty while we share our love for the ceramic arts!
- Our Mission & Impact: we founded Penguin Pottery in 2020 with a simple mission: to increase access to the ceramic arts, while doing so in an ecologically-responsible manner. To that end, we donate 1% of our sales to environmental groups working hard to protect our planet for future generations.
We Support Our Pottery Community
We Support Artists
CERF+ is the leading US non-profit organization providing emergency relief funds, educational programs, advocacy, and networking opportunities to safeguard artists' livelihoods nationwide.
PKJ
June 21, 2025
I'm a new potter experimenting with wild clay from the creek bank and a microwave kiln. I make small items such as tealight holders, hanging ornaments, flower frogs etc. This glaze - two coats- comes out perfect when fired on :high: for 35 minutes in my 900W microwave. Looking forward to trying more Penguin glazes!
lisa thomas
May 22, 2025
Clear glaze is great, I use it a lot in my pottery. Live it!
Kindle Customer
March 23, 2025
Normally this brand is a good one. My glaze seems to be older so that the glaze is hazy. Smaller container might be better for higher turn around on the shelves.
B. Messina
March 18, 2025
Beautiful clear glaze. Helps the underglazes pop!
Joyce
January 19, 2025
It is exactly what I needed!
Gayle M.
November 30, 2024
Cloudy finish. I used it over Amoco bright red underglaze and it has lots of cloudy spots.
The OG
November 25, 2024
I used this clear glaze on several mugs. Tried in in Laguna b mix, a mid fire porcelain, and a white stoneware. I glazed some all in clear - inside and outside and I glazed some in Amaco celadon on the inside and penquin clear in the outside. Most of the clear glaze crazed and none of the Amaco crazed. I’ve never had crazing, ever. I mixed the clear per their directions for a dipping glaze and fired at my usual slow fire cone 6 program. This glaze is not stable and not reliable. It has a chemical formulation problem and I am going to get rid of it. I would not recommend using this glaze, unless you want your pottery to craze on purpose and that’s the look you are going for.
Ines Campbell
November 14, 2024
I love love love all their products. The clear is perfect and never gives me huge issues. Repeat customer 🫧✌ðŸ¼ðŸª´
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