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An angle grinder, also known as a side grinder or disc grinder, is a handheld power tool used for grinding (abrasive cutting) and polishing. Although developed originally as tools for rigid abrasive discs, the availability of an interchangeable power source has encouraged their use with a wide variety of cutters and attachments.
The standard covers products meant for purposes where the security resistance required is less than that of EN 1143–1. [26] For fire-resistant safes the EN 1047-1 (fire resistance standard similar to the fire resistance safe standard of UL) and EN 15659 (for light fire storage units) were published. [27]
Rotating abrasive wheel on a bench grinder. Pedal-powered grinding machine, Russia, 1902. A grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding. It is a type of material removal using an abrasive wheel as the cutting tool. [1]
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Charles Churchill was born in the United States, in Hamden, Connecticut, on 8 July 1837. [3] His father was Willis Churchill, described as "a mechanic of rare ability, original in the style of his goods and in his process of manufacture," [4] who had been manufacturing brass surgical instruments at a time when such instruments were all imported to the United States.