Broken light bulb unscrewed from the socket with your hands is not only inconvenient, but dangerous: it is possible to injure your fingers. Therefore we recommend to use half a rubber ball the right size — safety will be fully complied with.
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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.
MODEL ROCKET PLANE WITH BOOSTER
This publication, we continue the story about the history of one of the categories in the rocket modeling - S4. It includes four classes of models raketoplana (model glider with the...
