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
HANDHELD VACUUM CLEANER…
This kind of "vacuum cleaner" uses the property of plastic to electrify the friction of the fabric. And the device it is very simple. In the lid of a conventional soap dishes, cut a few...
FIBERGLASS A MODEL AIRPLANE
The industry has already mastered the production of some basic parts from thermoplastics. This is an interesting and promising method for production of large series, however, for...
