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A drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for boring holes in various materials or fastening various materials together with the use of fasteners. The attachment is gripped by a chuck at one end of the drill and rotated while pressed against the target material. The tip, and sometimes edges, of the cutting tool does the work of cutting into the target material. This may be slicing off thin shavings (twist drills or auger bits), grinding off small particles (oil drilling), crushing and removing pieces of the workpiece (SDS masonry drill), countersinking, counterboring, or other operations.

Drills are commonly used in woodworking, metalworking, construction and do-it-yourself projects. Specially designed drills are also used in medicine, space missions and other applications. Drills are available with a wide variety of performance characteristics, such as power and capacity.
</div> <div jsname="WJz9Hc" style="display:none">gerudi A adalah alat yang dilengkapi dengan lampiran alat pemotong atau memandu lampiran alat, biasanya gerudi bit atau pemandu bit, yang digunakan untuk membosankan lubang dalam pelbagai bahan atau pengancing pelbagai bahan bersama-sama dengan penggunaan pengikat. lampiran ini dicengkam oleh chuck di satu hujung gerudi dan diputar manakala ditekan terhadap bahan sasaran. Hujung, dan kadang-kadang tepi, alat pemotongan melaksanakan pekerjaan memotong ke dalam bahan sasaran. Ini bolehlah menghiris off tatal nipis (latihan twist atau bit gerimit), pengisaran off zarah kecil (minyak penggerudian), menghancurkan dan mengeluarkan keping bahan kerja (SDS batu gerudi), countersinking, counterboring, atau operasi lain.

Drills biasa digunakan dalam kerja kayu, kerja logam, pembinaan dan do-it-yourself projek. latihan yang direka khas juga digunakan dalam bidang perubatan, misi angkasa dan aplikasi lain. Drills boleh didapati dengan pelbagai ciri-ciri prestasi, seperti kuasa dan kapasiti.</div> <div class="show-more-end">

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