Introduction to technical drawing pdf

A drawing instrument releases a small amount of introduction to technical drawing pdf onto a surface, leaving a visible mark. The medium has been a popular and fundamental means of public expression throughout human history. It is one of the simplest and most efficient means of communicating visual ideas.

The wide availability of drawing instruments makes drawing one of the most common artistic activities. Drawing is one of the major forms of expression within the visual arts. Drawing may be done with a liquid medium, applied with brushes or pens. Drawing is often exploratory, with considerable emphasis on observation, problem-solving and composition.

Drawing is also regularly used in preparation for a painting, further obfuscating their distinction. Drawing is one of the oldest forms of human expression, with evidence for its existence preceding that of written communication. These drawings, known as pictograms, depicted objects and abstract concepts. Drawing is used to express one’s creativity, and therefore has been prominent in the world of art. Throughout much of history, drawing was regarded as the foundation for artistic practise. Initially, artists used and reused wooden tablets for the production of their drawings. Following the widespread availability of paper in the 14th century, the use of drawing in the arts increased.

At this point, drawing was commonly used as a tool for thought and investigation, acting as a study medium whilst artists were preparing for their final pieces of work. Photography took over from drawing as a more superior method for accurately representing visual phenomena, and artists began to abandon traditional drawing practises. Although the use of drawing is extensive in the arts, its practice is not confined purely to this field. European monasteries used intricate drawings to prepare illustrated, illuminated manuscripts on vellum and parchment. Drawing has also been used extensively in the field of science, as a method of discovery, understanding and explanation. Watercolor pencils can be used dry like ordinary pencils, then moistened with a wet brush to get various painterly effects.

Metalpoint drawing usually employs either of two metals: silver or lead. More rarely used are gold, platinum, copper, brass, bronze, and tinpoint. Paper comes in a variety of different sizes and qualities, ranging from newspaper grade up to high quality and relatively expensive paper sold as individual sheets. Papers can vary in texture, hue, acidity, and strength when wet.

Smooth paper is good for rendering fine detail, but a more “toothy” paper holds the drawing material better. Thus a coarser material is useful for producing deeper contrast. Newsprint and typing paper may be useful for practice and rough sketches. Tracing paper is used to experiment over a half-finished drawing, and to transfer a design from one sheet to another.

Cartridge paper is the basic type of drawing paper sold in pads. Vellum is extremely smooth and suitable for very fine detail. Coldpressed watercolor paper may be favored for ink drawing due to its texture. An easel or slanted table is used to keep the drawing surface in a suitable position, which is generally more horizontal than the position used in painting.