How can I find more information about a product?

All detailed product information is available directly on the product page. Go to the product you are interested in and scroll down. There you will find:

• Product description
• Technical information
• Recommended firing range
• Any PDF documents, videos, and guides

Can I add products to an order I have already placed?

Yes, it is possible to add items to an existing order.

• Place your new order as usual
• Select “Add to previous order” at checkout
• Enter your previous order number in the comment field

If you have any questions, we are happy to help before the order is shipped. If the first order has not already been dispatched, we will combine the shipments without additional shipping costs. For very heavy items, shipping costs may need to be adjusted.

Will prices increase due to higher tariffs?

As of now (August 2025), increased tariffs mainly apply to goods exported from Sweden to the United States, not to goods exported from the United States to Sweden. Therefore, we do not currently expect price increases due to tariffs.

An exception may be products manufactured in China. When these are imported into the U.S. by our suppliers, higher tariffs may apply, which can increase our purchase prices.

I can’t complete my purchase. I filled in all the information but nothing happens.

Please fill in the Reference field. You can enter your name or any text.

We do not require this information, but the payment system requires that the field is filled in.

Can I shop in person at your location?

Yes, you are welcome to visit us. Here you can see and handle the products and ask questions. We also have glaze samples available.

See Opening Hours (bottom left of the website).

Can I pick up my order from your warehouse?

Yes, you can pick up your order from our warehouse. Please check Opening Hours (bottom left of the website).

Wait for our email confirming that your order has been prepared. At checkout, select “Pick up in Rydebäck warehouse.”

You can also pick up your order outside our opening hours. Instructions will be included in the email we send once your order is ready.

When will the next delivery from your suppliers arrive?

We continuously update information about incoming deliveries. At the top of the website you will find the link Next delivery, where you can see:

• Which deliveries are on their way
• Estimated arrival at our warehouse

How can I see the shipping cost?

Add your items to the cart and go to checkout. There you will see the shipping cost for your specific order.

You can also see shipping prices on our website.

Note: If you order items such as bisque, the shipping cost may not appear at checkout. In those cases, we need to calculate the lowest shipping cost based on the total weight and dimensions of the order. We will email you the shipping cost along with a payment link.

Can I place another order and have both orders shipped together?

Yes. Place a new order and select “Add to previous order” at checkout. Enter your previous order number in the comment field and we will combine the shipments if the first order has not yet been shipped.

I can’t complete my purchase – what should I do?

Please fill in the Reference field. You can enter your name or any text. The field is required by the payment system, but the information is not used by us.

Do you ship clay during the winter?

Clay can be shipped during winter, but frost may affect some products. When the water in the clay freezes, it can separate from the clay and damage the packaging. In many cases the clay can be restored by kneading it thoroughly.

For the following products, frost can permanently damage their properties and make them unusable: casting slip, wax resist/wax emulsion, Wax Off, Latex (Amaco), Bisque Fix (Amaco), Lee’s Liquid Soup.

During frost periods, these products are shipped at the customer’s own risk.

What temperature should I fire your glazes at?

The correct firing temperature is crucial for the final result.

General guidelines:

Earthenware: approx. 1000–1040 °C (cone 06–05)
Stoneware: approx. 1210–1230 °C (cone 5–6)

Firing higher or lower may cause color changes, a more matte surface, or increased glaze movement. We always recommend doing test firings.

What does cone mean compared to degrees (°C)?

Many glazes use cone values instead of degrees.

Examples:

Cone 06 ≈ 999–1040 °C
Cone 5/6 ≈ 1210–1230 °C

There is no exact conversion since the firing curve also affects the result.

Can I fire glazes at a higher temperature than recommended?

We generally recommend a bisque firing around 1000 °C. A slightly higher bisque temperature can reduce the risk of clay releasing gases during glaze firing.

All glazes can technically be fired at higher temperatures, but their behavior and appearance may change.

Common effects include:

• Color changes
• Increased glaze movement or running
• Changes in texture

Always test on a sample first.

What happens if I fire the wrong clay at the wrong temperature?

Using the wrong temperature can cause serious problems:

• Earthenware above approx. 1050 °C: may melt and damage kiln shelves
• Stoneware above its maximum temperature: may deform or blister

It is very important to keep earthenware and stoneware clays separate.

When is a clay fully vitrified?

A clay is considered vitrified when its water absorption is below 2%.

This information can be found in the specification sheet under Documents on each clay product page. In the table it is listed as Water absorption / Wasseraufnahme.

What is the difference between brush-on glaze and dipping glaze?

The main difference is form and application method.

Brush-on glaze:

• Ready-mixed
• Applied with a brush
• Sold in jars

Dipping glaze:

• Mixed with water
  
• Applied by dipping
  
• Comes in powder form

The final fired result is usually similar.

What is the difference between glaze, underglaze and engobe?

• Glaze: Provides color and surface finish. Often glossy and sometimes food safe on its own.
• Underglaze: Used for decoration and details. Requires a clear glaze (without zinc) to become food safe.
• Engobe: Colored clay used in a similar way to underglazes.

See our guide to learn more.

Does underglaze need a clear glaze?

Yes, if the object will be used as functional ware.

Underglaze without clear glaze produces a matte surface and is usually not food safe.

Which clear glaze should I choose?

The choice depends on the clay type and firing temperature.

Examples:

Earthenware: NTBR, EM-2134
Stoneware: HF-9, SW-004, MS-100

Use the filter function on our website to find the right clear glaze.

Can I combine glazes from different manufacturers?

Yes, but results should always be tested.

When two glazes are combined, they effectively create a new glaze, and the outcome may vary depending on temperature, clay body and application method.

Are your glazes food safe?

Food safety is determined by the finished fired surface.

Food-safe glazes:

• Withstand contact with food and liquids
• Resist cutlery marks

Glazes that are not food safe are clearly marked on the product page or with warning symbols.

A glaze that is not food safe may:

• Discolor when exposed to acidic food
• Show permanent cutlery marks
• Crack when exposed to boiling water
• Have a rough or crackled surface where food can collect

When mixing two glazes, food safety must be tested. One method is to fire a test sample, leave a lemon slice on the surface overnight, expose it to hot water, and test it with cutlery. If the surface remains unchanged, it is generally considered food safe.

You can filter food-safe glazes under Properties on our website.

What do the symbols and warning labels on glaze jars mean?

The symbols indicate how the glaze should be handled before firing. For example:

• Do not eat, drink, or smoke during application
• Avoid dust formation

If a glaze has received new warning symbols, it is often due to updated EU chemical labeling regulations, not because the product itself has become more dangerous.

Is it dangerous to work with brush-on glazes?

Brush-on glazes are ready-mixed and safe during normal use. Most of our glazes are water-based.

General recommendations:

• No mask is needed for normal brushing
• Use protection when sanding dry glaze
• Do not eat, drink or smoke while working
• Dispose of glaze residues at a recycling center

Why did the glaze become runny, bubbly or spotty?

Glaze results are influenced by several factors:

• Firing curve and temperature
• The clay body used
• Application thickness
• Number of layers
• Kiln characteristics

We always recommend test firings before glazing finished pieces.

Why are there grains in some glazes?

Coarse grains:
Some effect glazes contain crystals that create speckles or patterns during firing. Since these crystals are heavier, they often settle at the bottom of the jar and should be stirred thoroughly before use.

Small white grains:
These particles are called oolites and can appear in glazes over time. They do not affect glaze performance. They can either be removed after application or sieved out before use.

Why should distilled water be used for dipping glazes?

Distilled water contains no minerals or impurities that could affect the glaze’s development or final result.

Can you make ceramic beads?

Yes. For beads we generally recommend stoneware clay together with a suitable stoneware glaze.

A bead rack is used during firing to keep the beads in place.

Avoid placing too many beads on the same metal rod, as they may slide together during firing.

Can small damages on bisque-fired ceramics be repaired?

Yes. Small damages can be repaired using bisque repair products.

Some products require no additional firing, while others must be fired again after repair.

Can I wash ceramics in a dishwasher?

We recommend hand washing. Dishwasher detergents are aggressive and may affect the glaze surface and its longevity over time.

How do I make a return?

Please always contact us before sending a product back. The item must be:

• Unused
• In its original packaging

See the full terms in our Terms & Conditions.

What should I do if there is something wrong with my product?

Please contact us as soon as possible and include:

• Photos of the failed/broken object, packaging or box.
• A photo of the barcode on the packaging.
• The product’s item number.
• What type of clay was used?
• What firing temperature was used?
• Were Orton Cones used during firing?