When working with pencil on wood or cardboard, the pencil lead wears out quickly. To reduce the abrasion of stylus, and increasing the strength of the sharpened part of the pencil need to dip the tip in a quick-drying lacquer: furniture NC, caponiac, potekla.
Recommend to read
FLAP INSTEAD OF GLASSES
When working with a rotating cutting tool it is recommended to use special protective glasses. Their role can play a makeshift shield-the intake is made of metal strips and thin sheets of Plexiglas.
The FIRST Yak TAKING the FIGHT
In early 1939 the Soviet government put before the Soviet aircraft the task to accelerate the creation of new samples of military equipment. Special attention was paid to the fighters....