<p style="text-align: justify;">Underglaze,which is by its very name implies,is not a glaze. Rather it is,for the most part,a combination of oxides,gum,and clay or more simply it is a colored slip. Underglazes are used to decorate greenware and bisqueware and can be used to create many different visual effects on the clay.</p>
<p style="text-align: justify;">Underglazes can be used for scraffigo,specific graphic designs,specific colors,handmade images and so on.</p>
<p style="text-align: justify;">The benefit of underglazes is that you can mix them to create new colors,they don’t run,and they won’t bleed into other colors when you brush them on. These act completely different than glazes and the colors can change depending on the firing temperature and type you are firing them to. Colors that look vivid in a cone 6 oxidation firing can look vastly different when you compare the same colors in a cone 6 reduction firing. The important part to remember about underglazes is that if they are getting used for functional work they need a clear glaze over the underglaze to make it food safe. This clear glaze will change the colors and might even cause some colors to get burned out. Lighter colors with weaker oxides are the main underglazes that will burn out,but the colors with stronger oxides will stay vibrant after the firing. Underglazes come in a variety of forms. They are not just liquid these days,but also dry,chalk,pens,and pencils as well.</p>

<h2>How to apply underglaze</h2>
[caption id="attachment_17074" align="alignright" width="301"]<a href="https://staging.ceramic.school/wp-content/uploads/2017/07/How-To-Apply-Underglaze.png"><img class="wp-image-17074" src="https://staging.ceramic.school/wp-content/uploads/2017/07/How-To-Apply-Underglaze-300x262.png" alt="underglaze" width="301" height="263" /></a> <em>After bisque firing,terra sigillata or underglaze is painted over the incised areas and the excess is sponged away.</em>[/caption]

Underglazes can be applied to both greenware and bisque. It is usually a good idea to work with greenware though since the underglaze will shrink with the clay and it will be easier to tell if any spots need retouching once it is bisqued. When it comes to applying them to your pieces they can be brushed,poured,dipped,sprayed,and so on. If you are trying to spray an underglaze and it is too thick then watering it down will allow it to pass through the sprayer. If you’re trying to silk screen or monoprint and it is too thin then letting the water naturally evaporate by exposing the underglaze to the air for a while will solve this issue. Always be sure to check the underglaze to see what temperature it fires to before using it. If you have a lot of underglazes it is always a good idea to create a test slab with all of the colors on it. Labeling each underglaze below the colors is helpful if you have similar tones and then you’ll let it turn bone dry and bisque it. Once it is bisqued you will clear glaze only half of each color so you can tell what colors will stay true or will drastically change once a clear glaze is over it.
<h3>How to apply clear glaze</h3>
[caption id="attachment_17075" align="alignright" width="300"]<a href="https://staging.ceramic.school/wp-content/uploads/2017/07/Applying-a-Clear-Glaze-To-a-Piece.png"><img class="size-medium wp-image-17075" src="https://staging.ceramic.school/wp-content/uploads/2017/07/Applying-a-Clear-Glaze-To-a-Piece-300x221.png" alt="Applying a Clear Glaze To a Piece" width="300" height="221" /></a> <em>Applying a Clear Glaze To a Piece</em>[/caption]
<p style="text-align: justify;">If you’re applying a clear glaze to a piece that had underglaze applied in the greenware stage then you have less to worry about. Still,it is best to be careful with these pieces to ensure that the underglaze does not get smeared by the wet glaze that might rewet any excess underglaze. When you are applying a glaze on top of a piece that has underglaze applied after it was bisqued then you must be careful. This is when the underglaze will undoubtedly smear since it will be moistened again from the wet glaze. The best way to ensure that your underglaze will not run is to either spray the <a href="https://staging.ceramic.school/how-to-read-a-glaze-recipe/">glaze</a> over it,float the glaze over it,or sponge it on gently. It is best not to go over the same area twice to ensure that the underglaze will not smudge. Once the first coat is completely dry then you can carefully apply the second coat,but again be careful about going over areas so that you do not smudge the underglaze.</p>
<p style="text-align: justify;">In conclusion,underglazes are really handy when you want to create graphic designs. Images,specific colors,and many other creative ideas that might not be achievable through normal glazes. We hope this will inspire you to try some new ideas with underglazes and that you will know how to get beautiful results from your underglazes with our tips and advice.</p>

What is Underglaze?

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What is Underglaze?

What is Underglaze?

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