Graffito website

General Questions

  1. In the top right-hand corner of the site, click on the “Login” button.
  2. Then click on the button “Don’t have an account? Create one here” and fill in all the details correctly.
  3. Read and accept the “General Terms and Conditions of Sale” to finish registering.
  4. Click on “Save”.
  5. Once you have submitted your details, you will receive an e-mail to validate your registration. You should click on the link to validate it.
  1. Select the items you want to buy, enter the quantity and add them to the shopping cart.
  2. When you’ve completed your shopping, click on “Cart”.
  3. Click on “checkout”.
  4. Fill in the billing and delivery details.
  5. Select the desired delivery location.
  6. Select the desired shipping method.
  7. Select one of the available payment methods.
  8. Put any additional information you consider necessary in the “Comments” box.
  9. Click on “Continue”.
  10. Then click on “Checkout” and you will see a message indicating your order number and you will also receive confirmation of your order in your e-mail.

MB Way (Available in Portugal);
Multibanco Reference (Available in Portugal);
Credit Card;
Paypal;
Bank Transfer;

The order will be prepared as soon as payment is received.
The order will be dispatched within 2-5 working days.
The order will be delivered by courier.

When you select the store pick-up service, you should wait for an email confirming that your order is now available for collection.
Pick-up times are Monday to Friday, from 9 am to 6 pm.

If any product shows apparent damage on delivery, the customer should send an email to: cliente@graffitostore.com or send a message via the site’s customer support in order to initiate the complaints process and consequently return the product.

For more information, please consult the “Terms and Conditions” page. https://graffitostore.com/tc.html https://graffitostore.com/tc.html

Shipping throughout Europe?

Yes, graffito ships throughout Europe and to some countries outside Europe. If you can’t find a carrier for your country, please contact us and we’ll help.

Are the raw materials domestic?

Yes. The raw materials used in the development of our products are mostly domestic. If extremely necessary, we use external suppliers who meet our quality and safety criteria.

Do you have any suggestions?

At graffito we are always attentive to your needs. So that you get quality service and support. If you have any suggestions for improving our services, don’t hesitate to contact us.

And now graffito?

Questions about products

To choose the ideal clay for the work you want to do, there are some very important points to bear in mind:

  1. Kiln temperature: If the kiln in which you are going to fire your pieces is a low-temperature kiln, it is best to choose earthenware pastes; if your kiln can reach higher temperatures, you can always opt for stoneware or porcelain clays. You should also take into account the glaze you choose, as the temperature of your kiln will influence the final result.
  2. Technique: The type of work you’ll be doing is also an important factor when choosing the most suitable clay. If you’re going to be modeling, either on the wheel or by hand, there are clays like the C40SF and GF60 that are perfect for this.
  3. Compatibility of the glaze: The compatibility and application of the glaze can be a very important technical process when choosing a clay. You should always check that the glaze you choose is suitable for the clay you are going to use. The temperature ranges at which glazes and clays fire can differ.

We recommend storing your clay in a cool, dark and well-packaged place.

As long as the clay remains wrapped in plastic and stored according to the recommended instructions, it will be ready for use at any time. Some clays contain more organic matter than others and can therefore develop mold or mildew. These problems do not affect the performance of the clay and can be removed from the surface with a damp sponge.

The best option for small amounts of clay is to let the clay dry completely before breaking it into small pieces, after which you should place the broken pieces in a bucket. The clay should then be covered with water and left to soak for 24 hours. After 24 hours, the clay should have absorbed the water and become a liquid clay mixture. After this process, the clay is ready to be used again.

As a rule, as long as the glazes are from the same family and have the same firing temperature, there is no problem. In any case, as this is an experiment on the part of the client, we advise you to test it before starting your production process.

The term “Food Safe” cannot be applied to a glaze (in the form in which it is supplied). Only the final piece that has already been fired can be considered “Food Safe”. This is something that is beyond our control and that of any supplier, as it depends on a huge variety of factors that are impossible to control. The clay itself, the kiln and firing, the oxides added are some of the variables to consider for a product to be “Food Safe”. However, the only way to guarantee that a piece is “Food Safe” is to use a certified ceramic testing laboratory to certify it.

What are the differences between earthenware and stoneware?

Calcitic earthenware

Its composition is based on kaolins, clays, silicas, dolomite and calcite. mineral based on calcium magnesium carbonate (CaMg(CO3)2.), as well as dolomite, which is an abundant mineral based on calcium magnesium carbonate (CaMg(CO3)2. These raw materials make the big difference in the composition of calcite clays, which produce a plastic material, with a grayish color in the raw state that whitens during firing, and can contain cobalt aluminate that can whiten further if necessary.

It does not require such high temperatures for its production, ranging from 1000° to 1100°C degrees, depending on each client’s process and the characteristics of its composition. As it is a very porous material, it must go through a glazing process to make the piece impermeable and more resistant. When this glaze is applied, a second firing is carried out at a lower temperature than the first firing, approximately 1000ºC.

The main advantages of earthenware are the wide range of decorative options for the pieces, which can be painted and glazed, with lower production and sales costs, although its disadvantage is its greater fragility. It can be used in both utilitarian and decorative tableware.

Stoneware

Its composition is based on clays, kaolins, silicas and feldspars. The big difference in composition is in the fluxes, the feldspars. It may also contain talc, which is a mineral composed of hydrated magnesium silicate (Mg3Si4O10(OH)2). Firing at high temperatures, which can vary between 1,100 and 1,300º C. This firing process can be done in single-firing or double-firing. In the case of mono-firing, it has a lower cost, since after drying the pieces, they are then glazed and subjected to the final firing. In the two-firing process, the pieces are first fired at around 980 ºC-1000ºC in order to build up the resistance and absorption of the pieces so that the glaze can be applied and then fired to the final temperature. This process leads to a higher final cost, but has the advantage of also being able to apply the glaze by the dipping method.

The result is a robust material that is more resistant to impact, preventing the pieces from chipping, suitable for tableware, cooking, baking, decorating or storing liquids. It can be used in the microwave, dishwasher, oven and freezer. It has the advantage of having low absorbency (0 to 3%), which is why many customers don’t apply the glaze, but in this case only for decorative purposes.
Although it is highly resistant to thermal shock, it should not be exposed to sudden or extreme changes in temperature.

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