In the holes drilled in a wooden tube in the concrete wall, there is always a lot of sand and dust. To remove them will help plastic or metal tube by simply inserting it into the hole and how to blow into it (but mind your eyes!).
S. DOROFEEV, p. vokhtoga, Vologda region.
Recommend to read
YEAR-ROUND ASSISTANT
Fifteen years subscribed to the magazine "modelist-Konstruktor" and in each room find a lot of interesting and useful articles. By education I am a mechanical engineer and I am...
“MOLE” TO HELP
Aircraft mechanic M. A. Masters is one of the remarkable constellation of Amateur designers, which has always been proud of the Udmurt ground. He has such serious works as Delta - and...
