A nail and a screwdriver located as shown, will help you out, if in the bustle of work had disappeared the key from the Chuck of the drill and the drill bit must be urgently replaced.
Recommend to read
REINVENT THE WHEEL
With this proposal, despite the well-known skeptical saying, our magazine appealed to readers in No. 6, 1969, published a compilation about some unusual designs and a description of the...
A CIRCLE WITH A RULER
Any of the compass there is a limit in describing them circles. However, a circle of the desired radius can be obtained using... line. Just drill in it a large number of holes, then the...
