This simple device will help with the help of ordinary hand drills to cut holes of any diameter in the plywood, hardboard and particleboard.
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RELAY “TOUCH”
Simply by touching the sensing element and actuates an electronic device that includes an alarm or actuator. The sensing element Ан1 — plated plate connected through a resistor R2 with a...
MICROBALANCE
Like it or like machine grease and the saying "porridge oil will not spoil" is applicable in the technique not always. Excessive amount of it even at nodes where the friction should be...
