Carefully cut a circle from the cardboard using scissors is very difficult. To help in this work can usually tsyrkul fixed in his foot, as shown in the figure, a razor blade.
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COMBAT OSA
Accumulated by the end of 1950-x years experience of operation of the first anti-aircraft missile systems has shown that to combat low-flying targets they were of little use With great...
DRILL-GREGORATOS
This simple device will help with the help of ordinary hand drills to cut holes of any diameter in the plywood, hardboard and particleboard.
