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
CLAMP-“HARVESTER”
When repairing thin lines (such as a car or refrigerator), it would be good to have on hand a small pipe cutter, and for connection of pipes with swivel nuts — device for rolling. Not...
FROM THE CHIP TO SOLDERING POTS
Often tan, what power you have at your disposal a soldering iron "barely enough" to firmly interconnect the major parts, say, or to patch the leaky bottom of the pan. Even pre-heating on...
