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| Welcome at To be defined, a website filled with creativity. Here you will find numerous manuals in words and images on various subjects. On this page you can only see a selection. Choose from the menu on the left for more articles on your favorite topic. |
 Oil paint comes in many types and sizes. One of the disadvantages of oil paint is the smell of turpentine. Nowadays, there are also oil paints that can be thinned with water. These are made from modified linseed and safflower oils. These oils do not repel water but mix with it. However, the paint retains all the other properties of traditional oil paint. In fact, the composition is sometimes even nicer than that of some other brands of traditional oil paint. |
 Watercolor paint is a fine and commonly used medium. In principle, you don't need any additions to be able to watercolor. A brush, paint, paper, and water are sufficient. However, several tools have been developed to simplify working with watercolor paint and provide some extra possibilities. These tools are available from various brands. Some of the most commonly used ones are discussed in this article. Broadly speaking, these additions can be categorized into five categories. |
 Contrary to what most people think, there are many different types and qualities of colored pencils. Differences can be noticed in hardness, solubility, and colorfastness. Pencils are often used for making studies, but nowadays, pencil drawings are increasingly appreciated. |
 Charcoal is an inexpensive material available in various thicknesses, ranging from 2-3 mm up to 15 mm in diameter. The most commonly used thickness is around 4 to 7 mm, but for fine details, I prefer 2-3 mm. The very thick charcoal pieces are very useful for filling in large areas. |
 Markers are perhaps better known as "felt-tip pens". Who hasn't had them as a young child? The felt-tip pen was presumably invented in the early 19th century. The "modern" felt-tip pen as we know it now was invented in the early 1960s. Nowadays, there are many different types of markers. It is sometimes underestimated what you can do with markers. For example, take a look at the picture of Jessica Tremblay. |
 Clay is a weathering product of rocks, which disintegrate due to the significant temperature differences between sun and frost. As it is transported by water, for example, a sorting process takes place; stones, gravel, sand, and clay. The clay further weathers due to the action of weak acids dissolved in water, such as humic acids or carbonic acid. During the sorting process, various organic (plant residues) and inorganic (metal oxides) impurities can enter the clay. The different colors of the clay are caused by the metal oxides. Metal oxides are toxic, so wash your hands well after modeling and do not eat during modeling. |