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A wire-cut EDM machine using the CNC drawing plotter and optical line follower techniques was produced in 1974. Dulebohn later used the same plotter CNC program to directly control the EDM machine, and the first CNC EDM machine was produced in 1976. [10] Commercial wire EDM capability and use has advanced substantially during recent decades. [11]
6 × Fairbanks-Morse model 8-1/8OP, 10-cylinder opposed piston engines at 2,000 shp (1,500 kW), each driving a Westinghouse DC electric generator. Propulsion 2 × Westinghouse Electric DC electric motors driving the 2 aft propellers, 1 × 3,000 shp (2,200 kW) Westinghouse DC electric motor driving the detachable and seldom used bow propeller.
In order to activate the M14, the base plug is removed and discarded and an M46 stab detonator is screwed into the base of the mine. Then the mine is placed into a shallow hole in the ground (flush with the surface) and the pressure plate is carefully rotated from its safety position to the armed position using the special arming spanner supplied in each crate of mines.
While the toy may have gained notoriety in the '90s, the classic baking machine is worth a ton today. Many have sold their set on eBay and have earned as much as $300 for it.
Deep hole drilling also differs from normal drilling in that, depending on the drilling process and the drilling diameter, cooling lubricant must be pumped to the cutting edges in large quantities and under high pressure. This ensures good cooling and at the same time good lubrication of the contact areas between the workpiece and the cutting ...
Composition B (Comp B), also known as Hexotol and Hexolite (among others), is a high explosive consisting of castable mixtures of RDX and TNT. It is used as the main explosive filling in artillery projectiles , rockets , land mines , hand grenades , and various other munitions . [ 1 ]
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