Transparent (Glaze)
A transparent glaze is a type of vitreous coating that is applied to the surface of a piece to enhance its natural color and texture, allowing a clear view of underlying details. Unlike opaque glazes, transparent glazes do not hide the intrinsic characteristics of the clay or previously applied decorations, such as engobes, paintings or engravings. This type of glaze can be colorless or have slight tints that subtly modify the color of the piece without obstructing its natural appearance.
The composition of transparent glaze generally includes silica (SiO₂), alumina (Al₂O₃) and fluxes that lower the melting point of the silica, allowing the glaze to melt at lower temperatures. The addition of metal oxides can modify the translucency and gloss of the glaze, although to a lesser extent than in colored glazes. The application of transparent glaze requires a clean and well prepared surface to ensure a uniform and flawless adhesion.
In terms of application techniques, transparent glazes can be applied by dipping, brushing, spraying or pouring, depending on the desired effect and the precision required. Controlled firing is essential to avoid imperfections such as bubbles or flaking, which can affect the transparency and final finish of the piece.Interesting Fact
In Qing dynasty Chinese porcelain, transparent glazes were perfected to create impeccably smooth, glossy surfaces that enhanced hand-painted designs. These techniques achieved a balance between functionality and aesthetics, setting high standards in the production of fine porcelain that are still admired today.Helpful Tip
To achieve a clear glaze coat without bubbles or imperfections, it is essential to apply the glaze in thin, even coats. Use tools such as a sprayer or airbrush for a controlled application and avoid overloading the piece with glaze, which can cause runoff and defects in the finish.
