If the drilling hole in the concrete wall towards the drill catches a very durable stone, it is even a great tool with a well-sharpened carbide-tipped is powerless: the drill leads to the side or it quickly “sit.” In this case, the rescue steel construction dowel the proper length to: break the rock and drill further.
Recommend to read
CATAMARAN MATTRESSES
For lovers of hikes of the day off prefer to relax on the water, great interest will present an unusual variant of the lightweight catamaran, published in the Hungarian magazine...
THE SPEED CHANGE RODS
As you know, for different road conditions: descents, climbs — many types of bikes use a block of sprockets of different diameters for changing torque to the rear driving wheel. These...
