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[[File:PowerDrill.png|200px|right]]
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<div class="floatright"><dtamazon type="search" search=" Electric Drill"><img alt="PowerDrill.png" src="/images/thumb/b/b9/PowerDrill.png/300px-PowerDrill.png" width="300" height="304" srcset="/images/thumb/b/b9/PowerDrill.png/450px-PowerDrill.png 1.5x, /images/thumb/b/b9/PowerDrill.png/600px-PowerDrill.png 2x" /></a></dtamazon></div>
The [https://en.wikipedia.org/wiki/Drill '''Power Drill'''] is the most popular and versatile of all power tools and most home toolkits will have at least one. With suitable attachments* they are capable of much more than simply drilling holes. Most modern drills have a [https://en.wikipedia.org/wiki/Chuck_%28engineering%29 '''Keyless Chuck'''] with a capacity up to 10mm or 13mm.
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Originally designed as a [https://en.wikipedia.org/wiki/Drill#Pistol-grip_.28corded.29_drill'''Pistol Grip'''] mains electricity powered [https://en.wikipedia.org/wiki/Drill#Pistol-grip_.28corded.29_drill '''''(or corded)'''''] device, but battery powered [https://en.wikipedia.org/wiki/Drill#Cordless_drills '''''(or cordless)'''''] versions are becoming more common. They are more convenient and the tendency now is to use the same battery pack on different single-purpose machines rather than use power drill attachments. 18 Volt drills are the most common and, in general, the higher the voltage, the more powerful and useful the drill.
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=====Description=====
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The [http://en.wikipedia.org/wiki/Drill'''Power Drill'''] is the most popular and versatile of all power tools and most home toolkits will have at least one. With suitable attachments* they are capable of much more than simply drilling holes. Most modern drills have a [http://en.wikipedia.org/wiki/Chuck_%28engineering%29 '''Keyless Chuck'''] with a capacity up to 10mm or 13mm.
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Originally designed as a [http://en.wikipedia.org/wiki/Drill#Pistol-grip_.28corded.29_drill'''Pistol Grip'''] mains electricity powered [http://en.wikipedia.org/wiki/Drill#Pistol-grip_.28corded.29_drill '''''(or corded)'''''] device, but battery powered [http://en.wikipedia.org/wiki/Drill#Cordless_drills '''''(or cordless)'''''] versions are becoming more common. They are more convenient and the tendency now is to use the same battery pack on different single-purpose machines rather than use power drill attachments. 18 Volt drills are the most common and, in general, the higher the voltage, the more powerful and useful the drill.
  
 
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=====Features and Applications=====
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[[File:HammerDrill.png|200px|right]]
 
[[File:HammerDrill.png|200px|right]]
Many '''Portable Electric Drills''' have some form of speed control ''(e.g. either a two-speed gearbox or an electronic variable speed control)'' and some have [https://en.wikipedia.org/wiki/Torque '''Torque Control'''] and [https://en.wikipedia.org/wiki/Clutch '''Clutch'''] with reverse, which can be helpful when driving in [[Woodscrews and Self-Tappers|woodscrews]] for example. Drills used for making holes in masonry often include a [https://en.wikipedia.org/wiki/Drill#Hammer_drill '''Hammer Action'''].   
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Many '''Portable Electric Drills''' have some form of speed control ''(e.g. either a two-speed gearbox or an electronic variable speed control)'' and some have [http://en.wikipedia.org/wiki/Torque '''Torque Control'''] and [http://en.wikipedia.org/wiki/Clutch '''Clutch'''] with reverse, which can be helpful when driving in [[Woodscrews and Self-Tappers|woodscrews]] for example. Drills used for making holes in masonry often include a [http://en.wikipedia.org/wiki/Drill#Hammer_drill '''Hammer Action'''].   
 
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<span style="color: red">'''Safety Point!'''
 
<span style="color: red">'''Safety Point!'''
The drill [https://en.wikipedia.org/wiki/Clutch '''Clutch'''] is designed to slip if too much [https://en.wikipedia.org/wiki/Torque '''Torque'''] is applied. This can help prevent screws breaking off but is most important when drilling large diameter holes in masonry ''(e.g. with a '''Core Drill''')'' to prevent personal injury caused by the drill being twisted out of the user's hand.   
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The drill [http://en.wikipedia.org/wiki/Clutch '''Clutch'''] is designed to slip if too much [http://en.wikipedia.org/wiki/Torque '''Torque'''] is applied. This can help prevent screws breaking off but is most important when drilling large diameter holes in masonry ''(e.g. with a [http://en.wikipedia.org/wiki/Core_drill '''Core Drill'''])'' to prevent personal injury caused by the drill being twisted out of the user's hand.   
 
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[[File:SDSdrill.png|200px|right]]
 
[[File:SDSdrill.png|200px|right]]
[https://en.wikipedia.org/wiki/Drill_bit_shank#SDS_shank '''SDS Drill''']
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[http://en.wikipedia.org/wiki/Drill_bit_shank#SDS_shank '''SDS Drill''']
  
Most power drills have chucks which accept [https://en.wikipedia.org/wiki/Drill_bit_shank#Straight_shank '''Parallel Shank'''] drill bits ''(also triangular and hexagonal)'' but some purpose-made and heavier duty [https://en.wikipedia.org/wiki/Drill#Rotary_hammer_drill '''Rotary Hammer Drills'''] have a chuck which is designed to have [https://en.wikipedia.org/wiki/Drill_bit_shank#SDS_shank '''SDS Shank'''] bits simply slotted in.
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Most power drills have chucks which accept [http://en.wikipedia.org/wiki/Drill_bit_shank#Straight_shank '''Parallel Shank'''] drill bits ''(also [http://en.wikipedia.org/wiki/Drill_bit_shank#Triangle_shank triangular] and [http://en.wikipedia.org/wiki/Drill_bit_shank#Hex_shank hexagonal])'' but some purpose-made and heavier duty [http://en.wikipedia.org/wiki/Drill#Rotary_hammer_drill '''Rotary Hammer Drills'''] have a chuck which is designed to have [http://en.wikipedia.org/wiki/Drill_bit_shank#SDS_shank '''SDS Shank'''] bits simply slotted in.
  
  
'''SDS Drills''' are commonly able to rotate as normal, rotate with hammer action, or apply hammer action without rotating.  For this reason, a range of '''[[Chisels|chisels]]''' and '''[[Chisels|bolsters]]''' are available as SDS tools, in addition to masonry drills.
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[http://en.wikipedia.org/wiki/Drill_bit_shank#SDS_shank '''SDS Drills'''] are commonly able to rotate as normal, rotate with hammer action, or apply hammer action without rotating.  For this reason, a range of '''[[Chisels|chisels]]''' and '''[[Chisels|bolsters]]''' are available as SDS tools, in addition to masonry drills.
 
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[[File:ImpactDriver.png|200px|right]]
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<span style="color: green">'''*Note:'''
 
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The SDS bit was developed by [https://en.wikipedia.org/wiki/Hilti Hilti] and [https://en.wikipedia.org/wiki/Robert_Bosch_GmbH Bosch] in 1975. The name comes from the German: "'''S'''tecken – '''D'''rehen – '''S'''ichern" ''(Insert – Twist – Secure)'' but [https://en.wikipedia.org/wiki/Robert_Bosch_GmbH Bosch] marketing now uses "Special Direct System" for international purposes.
 
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'''[[Screwdrivers#Powered_Screwdrivers|Portable Electric Screwdriver]]'''
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Cordless power drills with speed and [https://en.wikipedia.org/wiki/Torque '''Torque Control'''] can be very effective also as powered screwdrivers but, more conveniently, a separate powered screwdriver can speed up working by avoiding the need constantly to change bits when drilling
 
a series holes to receive screws.
 
 
 
 
 
The effectiveness of '''[[Screwdrivers|Powered Screwdrivers]]''' is enhanced if a hammer-type action is applied as the screw is turned. This is the case with an '''Impact Screwdriver'''
 
  
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{{Portable Electric Drills Buyers Guide}}
  
 
[[Category:Portable Power Tools]]
 
[[Category:Portable Power Tools]]
 
[[Category:Drilling and Boring]]
 
[[Category:Drilling and Boring]]

Latest revision as of 10:29, 8 May 2018

PowerDrill.png


Description

The Power Drill is the most popular and versatile of all power tools and most home toolkits will have at least one. With suitable attachments* they are capable of much more than simply drilling holes. Most modern drills have a Keyless Chuck with a capacity up to 10mm or 13mm.


Originally designed as a Pistol Grip mains electricity powered (or corded) device, but battery powered (or cordless) versions are becoming more common. They are more convenient and the tendency now is to use the same battery pack on different single-purpose machines rather than use power drill attachments. 18 Volt drills are the most common and, in general, the higher the voltage, the more powerful and useful the drill.


*Note: When using power tools in schools, battery powered, single purpose tools are preferred and the use of attachments avoided [Ref: BS 4163 2007].


Features and Applications
HammerDrill.png

Many Portable Electric Drills have some form of speed control (e.g. either a two-speed gearbox or an electronic variable speed control) and some have Torque Control and Clutch with reverse, which can be helpful when driving in woodscrews for example. Drills used for making holes in masonry often include a Hammer Action.


Safety Point! The drill Clutch is designed to slip if too much Torque is applied. This can help prevent screws breaking off but is most important when drilling large diameter holes in masonry (e.g. with a Core Drill) to prevent personal injury caused by the drill being twisted out of the user's hand.


SDSdrill.png

SDS Drill

Most power drills have chucks which accept Parallel Shank drill bits (also triangular and hexagonal) but some purpose-made and heavier duty Rotary Hammer Drills have a chuck which is designed to have SDS Shank bits simply slotted in.


SDS Drills are commonly able to rotate as normal, rotate with hammer action, or apply hammer action without rotating. For this reason, a range of chisels and bolsters are available as SDS tools, in addition to masonry drills.


*Note: The SDS bit was developed by Hilti and Bosch in 1975. The name comes from the German: "Stecken – Drehen – Sichern" (Insert – Twist – Secure) but Bosch marketing now uses "Special Direct System" for international purposes.


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