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
THE GRIP — BARS
To cut with a hacksaw a thin tube, not securing them, very uncomfortable and tiring. However, if you have no grip on this case— do not worry: help out a pair of wooden sticks, with one...
LASER ASSISTANT
As a longtime reader of Your magazine, a lot of interesting in this read. Finally, I decided to write myself: maybe useful to someone my experience of construction. Its essence is as...
