10 Best chalk of 2020

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Chalk counselor

Black chalk know innumerable generations of pupils, pupils and teachers. For many centuries, chalk for writing is not only used at school. Even in the age of modern technology is chalk from the everyday school life indispensable. At home chalk happy to use for writing and painting on game boards. chalk , also known as school chalk or chalk, is available in different qualities, two shapes and many different colors.

What will become of chalk manufactured?

Chalk was produced until well over 100 years ago mainly from naturally occurring gypsum. Gypsum was and still is the basic material for chalk production in Germany, Austria and the Scandinavian countries. Even today, more than half of those sold in Germany exist chalk made of plaster. In France, naturally occurring so-called champagne chalk is used for the production of chalk and artisan chalk. Champagne chalk is made of chalk and is a chemically very pure calcium carbonate. Champagne chalk is considered very high quality. Increasingly, chalk today is made from magnesia. The same white powder Turner uses.

The pelican set with blackboard chalk contains 12 pieces of colored chalk. The chalk pieces are round and have a diameter of 12 mm. The length of the chalk pieces is 90 mm. A transparent surface coating in the grip area ensures that the chalk does not transfer to the fingers. This chalk is a high quality and dust free chalk.

What is the advantage of dust-free chalk?

Chalk dust is created especially when wiping a chalk board with a dry cloth. The dust is suspected of causing respiratory and pulmonary problems under unfavorable conditions. In addition, the chalk dust for most allergic people is at least disturbing and unpleasant. For this reason, dust-free chalk is increasingly being developed and sold. Another advantage is that dust-free chalk transfers to a small extent on the fingers.

100 pieces of colored chalk contains a box of Giotto’s RoberColor Chalkboard Chalk. The round chalk is dust-free, dermatologically tested and made from genuine French champagne chalk. The chalk pieces have a diameter of 10 mm and are 80 mm long. 10 different colors are contained in a box.

Why does chalk occasionally squeak – is there chalk that does not squeak?

The high-frequency and perceived by most people as unpleasant squeaking is caused by the so-called stick-slip effect. Stick-slip means that the chalk sticks to the board when writing in quick succession and then jumps a little further. As a result, the chalk may begin to vibrate and the squeaking can be heard. The squeaking can be prevented by grasping when writing or breaking the chalk into two shorter pieces. So far, no creaking chalk has been developed.

As a rule, hardly anything can be wrong when choosing a suitable chalk. Mostly the price is the decisive criterion for the choice of a certain chalk mark. If you like a high-quality chalk with a uniform typeface, you can use the champagne chalk. The purchase of a dust-free chalk is recommended for allergy sufferers and, in general, for anyone who does not want to cause chalk dust for health reasons or to avoid dusting the surrounding area around the board.

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*Last update on 2020-11-04 / Affiliate links(we get a commission when you buy on amazon) / Images from Amazon Product Advertising API