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2. Oscillating multi-tool - Wikipedia

   en.wikipedia.org/wiki/Oscillating_multi-tool

   The name "multi-tool" is a reference to the many functions that this tool can perform with the range of attachments available. "Master Tool" is also a trade name used in North America, short for the original tool by Fein called the Multi-Master. Attachments are available for sawing, sanding, rasping, grinding, scraping, cutting, and polishing.

3. Fein Multimaster RS - Wikipedia

   en.wikipedia.org/wiki/Fein_Multimaster_RS

   The Fein MultiMaster RS is a variable speed oscillating tool for cutting, sanding and grinding. It is produced by C. & E. Fein GmbH , along with a broad assortment of accessories. When Fein's patent expired in October 2008, other tool makers started creating similar products, such as the Dremel Multi-Max, Bosch PS50 Multi-X, Rockwell Sonicraft ...

4. Ultrasonic machining - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_machining

   The abrasive grains in the slurry now act as a free cutting tool as they strike the workpiece thousands of times per second. [3] An electronic oscillator in the control unit produces an alternating current oscillating at a high frequency, usually between 18 and 40 kHz in the ultrasonic range. The transducer converts the oscillating current to a ...

5. craigslist - Wikipedia

   en.wikipedia.org/wiki/Craigslist

   In 2023 Craigslist listed seven hundred cities in 70 countries on its website and generated 560 million visits per month. [6] Despite such global presence, 90% of the website visitors are from the USA. [7] Nevertheless, according to Alexa, Craigslist was the #19 most visited website in the United States in 2022 and #16 in the World in 2023. [8]

6. Electronic oscillator - Wikipedia

   en.wikipedia.org/wiki/Electronic_oscillator

   Simple relaxation oscillator made by feeding back an inverting Schmitt trigger's output voltage through a RC network to its input.. An electronic oscillator is an electronic circuit that produces a periodic, oscillating or alternating current (AC) signal, usually a sine wave, square wave or a triangle wave, [1] [2] [3] powered by a direct current (DC) source.

7. Power tool - Wikipedia

   en.wikipedia.org/wiki/Power_tool

   The most common types of power tools use electric motors. Internal combustion engines and compressed air are also commonly used. Tools directly driven by animal power are not generally considered power tools. Power tools can produce large amounts of particulates, including ultrafine particles. Airborne particulate matter is a Group 1 carcinogen.