What is the individual difference of handmade pottery, what is penetration and glaze?

April 18, 2020


table of contents

  1. Enjoy common features and individual differences.
  2. Individual difference in shape
  3. Unevenness of glaze
  4. Glaze
  5. Iron powder
  6. Penetration
  7. Pinhole
  8. Enjoy as a texture

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| Enjoy common features and individual differences.

In Japan, there is a unique aesthetic in which beauty is found in nature as it is, and imperfections are rather valued. The pottery that is manually made through several processes has the characteristics that lead to this idea. Patterns such as painting that are often seen on handmade vessels are easy to understand. Even when they are produced as the same type, the ones drawn by humans have different expressions one by one, so it is very expressive. In order to enjoy the taste, some designs are intentionally faded or shaded. The workmanship that is not made mechanically feels warm. The second is the texture and texture. Originally, various organic substances are contained in the soil, but in the mass-produced vessels, it is often the case that thoroughly refined soil is used as the raw material, and firing is performed to prevent uneven burning colors. Most of the methods are also managed. In other words, the finished product shows almost no difference in texture or color. However, only a limited number of hand-made vessels are subject to individual differences due to their shape, size, soil composition, and baking method. For example, it may appear in the phenomenon of "stone stones". In the pottery, small stones mixed with the soil, which is the base material, appear on the surface when the pot is baked, and can be seen as a rounded roundness of stones or as small cracks. This is regarded as the unique taste of each pottery.

| Individual differences in shape

One of the characteristics of human-made vessels is that even if they are made with the same design or shape, the shapes will differ little by little. Usually, when making the shape of the vessel, there is a method of using a potter's wheel, hand-bending and plaster mold. Since everything is done by human hands, there are subtle differences in distortion and size. In addition, the decorations made with tools such as spatulas will make a difference. Since the design is created by carving and shaving the vessels, the same thing cannot be completed as one. It feels a trace of manual work that is not found in mass-produced products.

| Glaze unevenness

Glaze is a glassy chemical that can be placed in a "no-yaki" container made by baking clay at low temperature. There are various textures and colors, and they are deeply involved in the design of vessels, so artists often stick to them as a means of expression. It also acts as a coating to prevent moisture and dirt from seeping into the vessel. When performing the "glazing" process of applying glaze to a container, the liquid glaze may be uneven depending on the shape of the container and how it is applied. This is also a phenomenon that can only be done manually, and gives the vessel a unique look.

| Glazed Dull

During the glaze process, the glaze that has flowed out will have a portion that accumulates due to the shape of the vessel. The accumulated portion becomes thicker in the glaze, so the color becomes darker and this is called a glaze pool. The deep colors made of glass are very beautiful, and the contrasting shades and beautiful gradation are the highlights. The glaze dull is often used as an expression in making works in order to enjoy the three-dimensional appearance and color of the vessel.

| Iron powder

The iron spots in the soil that are seen when they appear on the surface of the bowl are called iron powder. These grainy black dots give the feeling of the natural earth. Iron powder is sometimes called "mole" and is appreciated as the unique character of the vessel. Some writers dare to use clay with iron to feel the warmth of the soil. If you find it, let's enjoy it as charm.

| Penetration

The base and glaze shrink when they cool and set after firing. It is called penetration when the glass glaze is cracked due to the difference in shrinkage ratio. This phenomenon of penetration is also regarded as an attraction in pottery. As the crusted container is used in everyday life, the cracks will become more colored and will change into a flavorful one. In addition, there is also the case of inking with black ink, which is sometimes enjoyed as a design that emphasizes cracks by adding black ink to the penetration. In order to make the penetration difficult to color due to aging, it is necessary to perform "cleaning" before using the vessel.

| Pinhole

When baking in a kiln, the organic substances remaining on the substrate and the dust on the glaze may be baked together, and the traces may form small holes. It's called a pinhole. Pinholes can also be created by the bubbles that enter when the glaze is stirred. This is a characteristic that is rarely seen in vessels made in places where raw materials and work processes are thoroughly controlled. It is dried as it is dried in the sun, and the natural ash that comes out when it is burned becomes a glaze. ‥

| Enjoy as a texture

Most of the pottery made by Japanese artists are based on how to make Japanese tableware, so if you keep in mind the features introduced, you can enjoy choosing pottery more. The craftsman's thoughts and sophisticated techniques are carefully made and there is exactly one piece, which makes one meeting for the first time attractive. There are traces of handiwork everywhere that can't be seen in mechanically made vessels. Such pottery has a realistic sensation of making things, and it makes you feel the warmth that you can't say anything about. The difference in the color and shape of each vessel is something that we want to cherish as a unique texture. And by sharing your daily life, it must be a pleasure to enjoy the aging of the vessels. It is sometimes referred to as "growing a vessel" that the vessel gradually changes with use, but the feeling that the texture changes so as to "grow" according to the life of the user is more and more attached. It should come.


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