
In No. 12 “M-K” for 1984 described how to lengthen short pencil cut with a thin-walled tube. I’m here for several years are not a pipe extender, and a cap from a ballpoint pen. Pencil it lasts very well. When you are finished drawing, I put the cap on the sharpened part of the pencil to protect the lead from breakage. If the cap will be too big. the pencil should be screwed a strip of paper — it compensates for the gap.
K. BARSAMIAN, Yerevan
Recommend to read
A GYRO WITHOUT A MOTOR
In recent years, the aviation enthusiasts in many countries are showing great interest in flying on makeshift gliders-the gyros and the gyros. Inexpensive, easy to manufacture and easy...
SHOCKPROOF THERMOS
One of the most fragile vessels household is considered to be a thermos. To protect its fragile glass bulb from damage and at the same time improve thermal insulation can, poured into...