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
SHORT AGE OF SUPERPREVIEW
Civil war in USA was suddenly brought to the fore a small improvised cruisers who have achieved outstanding success. However, this does not mean that such ships are immediately received...
PROTECTION TAPE
If you stick to the glass electronic clock transparent sticky film type "Scotch" or used for pasting of books, it will increase the life of the glass and protect it from scratches. ...
