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
MIDDLE BOMBER YAK-2
THE MIDDLE BOMBER, THE YAK-2. Scale model 1:33. In February 1939 at the Moscow Central airfield Frunze has a nice twin-engined monoplane dvuhkilevoe. Experienced eye it was clear that...
DOUGLAS A20 BOSTON
American Douglas aircraft company was founded in 1921 by aircraft Donald Wills Douglas. Among the first aircraft issued by the firm were the torpedo bombers, passengers, mail and...
