Editing Power tool (section)

==History==
[[File:Drive Shaft and Belts, Redbournbury Mill - geograph.org.uk - 1561145.jpg|thumb|Shaft and belt system]]
Early [[Industrial Revolution]]-era factories had batteries of power tools driven by belts from overhead shafts. The prime power source was a [[water wheel]] or (later) a steam engine. The introduction of the electric motor (and electric distribution networks) in the 1880s made possible the self-powered stationary and portable tools we know today.<ref>{{cite web|title=Modern Marvels: The World's First Power Tools|url=http://www.history.com/videos/the-worlds-first-power-tools|archive-url=https://archive.today/20130125083128/http://www.history.com/videos/the-worlds-first-power-tools|url-status=dead|archive-date=January 25, 2013|publisher=[[History (U.S. TV channel)|History]]|access-date=Oct 4, 2011}}</ref> The global market for power tools is $33&nbsp;billion (in 2016) and estimated to reach $46&nbsp;billion in 2025.

===Safety Enhancement===
Prior to the 1930s, power tools were often housed in [[metal casting|cast metal]] housings. The cast metal housings were heavy, contributing to repetitive use injuries, as well as conductive – often shocking the user. As Henry Ford adapted to the manufacturing needs of [[World War II]], he requested that A. H. Peterson, a tool manufacturer, create a lighter electric drill that was more portable for his assembly line workers.<ref name="HoleShoot">{{cite web|url=https://www.milwaukeetools.com.au/company/milwaukee-story/history-of-milwaukee|title=History of Milwaukee |publisher=[[Milwaukee Electric Tool Corporation|Milwaukee Tool Corporation]]}}</ref> At this point, the Hole-Shooter, a drill that weighed 5&nbsp;lbs. was created by A. H. Peterson. The Peterson Company eventually went bankrupt after a devastating fire and [[recession]], but the company was auctioned off to A. F. Siebert,<ref name="MilwaukeeHistory">{{Cite web|url=http://www.milwaukee-et.com/int/int_about.nsf/vwFiles/milwaukee-story/$FILE/MilwaukeesHistory.pdf?OpenElement|title=None}}</ref> a former partner in the Peterson Company, in 1924 and became the [[Milwaukee Tool|Milwaukee Electric Tool Company]].<ref>{{cite book|last=Nagyszalanczy|first=Sandor|title=Power Tools: An Electrifying Celebration and Grounded Guide|publisher=The Taunton Press|location=Newtown, CT|year=2001|isbn=978-1-56158-427-7}}</ref>

In the early 1930s, companies started to experiment with housings of [[thermosetting polymer]] plastics. In 1956, under the influence of [[Hans Erich Slany]], [[bosch (company)|Robert Bosch GmbH]] was one of the first companies to introduce a power tool housing made of glass filled nylon.<ref>{{cite book|last=Ogursky|first=Gunter|title=Design: The Quality Factor|publisher=Robert Bosch GmbH|location=Esslingen, Germany|date=<!-- unknown1 -->|isbn=<!--unknown-->}}</ref>