Collet pencil - a reliable artist tool

Modern computer graphics could not completely replace the work of artists. They still create pencils on a sheet of paper. "Cannon" of their work has changed a little, it has become convenient and reliable. Ordinary pencil, collet, automatic, color or simple - they are all in demand and find their customers.

History of creation

The prototype of the writing tool itself appeared in the thirteenth century. Of course, it resembled little of the modern model - a thin silver wire on the handle was connected by soldering. More or less reminiscent of a modern pencil appeared in the seventeenth century. The artists fixed the graphite rods between the narrow boards, bound and wrapped with paper. So do not get dirty hands, and to keep it was more convenient.

At the end of the eighteenth century, the French scientist and inventor Nicolas Jacques Comte invented the modern model. Then it was improved, first Lothar von Faberkastl solved the problem of rolling, offering a hexagonal shape of the product.

The rational approach of Americans to life prompted Alonso Townsend Cross to think about more economical use of the graphite rod. During operation, two-thirds of the product is thrown out during its sharpening. He "hid" the lead into a metal tube and pushed it out as needed to the desired length. Pencil Collet - "great-granddaughter" and the simplest modern design of the same metal tube.

Principle of operation

Zang - Zange, in German translation, means a device for fixing cylindrical objects with the help of a clamp. The application is very wide: in scalpels, breastplates, on metal- and woodworking machines, anchor bolts, various construction tools, where reliable fixation is required.

Collet pencil got its name by the mechanism that is used in its manufacture. This device consists of several "petals", tightly grasping the lead. With the help of a spring, pressing the button at the top of the product, the collet opens and you can extend the lead to the desired length. After releasing the button, the "petals" close and hold the lead in the desired position.

Collet pencil (2 mm - the most common, there are from 0.1 mm to 5 mm) can be made of different materials. There are wooden, metal, plastic, combined enclosures. For convenience, rubber inserts can be installed in the girth area. They expand the casing of the pencil and do not allow it to slide in the hand. They differ in the quality of the eraser.

Varieties

A tool designed for drawing an image in which an infinite number of times a graphite rod can be changed is called a mechanical pencil. Used for drawing, writing, drawing. There are two varieties:

• Pencil automatic;
• Pencil collet.

In turn, the automatic is divided into several types, depending on the mechanism that feeds the rod:

• Screw, feed by turning any part of the body;
• Shake-press (shake or press) to feed the rod you need to shake the pencil;
• For lazy, the button providing the supply of the lead is located on the side of the body in the girth area.

The most practical products are those in which the guide mechanism is not made of plastic. A strong depression can trigger the withdrawal of the rod into the housing.

Advantages

Consumers are the most independent experts. The goods they use must meet the declared qualities. Here are a few of the virtues that a collet pencil has:

• Does not require sharpening;
• The rod can be "retracted" into the body and not be afraid of its breakage in any transportation;
• You can adjust the thickness of the lead;
• The presence of a replacement eraser;
• The trace from the pencil lasts longer than from the ink;
• High reliability when pressed.

This device enjoys a huge number of people: students, students, specialists in the production. Use it and artists, both professionals and amateurs. It allows you to apply a contour with a width of just 0.2 mm.

Multipurpose appointment defines and a variety of a choice. Mechanical pencil pencils are produced by many well-known companies Paper Mate (Mexico); Penac, Pilot, Parker, Attache, BIC, Pentel, Koh-I-Noor, ICO, Rotring, Germany. The mechanical pencil of the world famous brand will be an excellent gift to any celebration. A set of colander pencils, simple or colored, will please both the adult and the child.