The hole in the metal plate can be obtained without drill: it is enough to bend it and work a round file or a needle file. This technique is especially useful when you want an oval hole. It is applicable for punching a rectangular window or a narrow slit: in this case, use is not round, but flat needle file or hacksaw.
Recommend to read
AMPHIBIAN VICKERS VIKING
In December 1918, the chief designer of the British company "Vickers aircraft" Pearson took over the project of amphibian aircraft. The idea looked interesting: this machine could be...
METAPHOR
Isn't that a stark contrast: while the fields of collective and state farms are treated today powerful "Kirov workers", the private plots of rural workers in the old plow at best plow...
