What Materials Are Used to Make an Electric Screwdriver?

Written by ray hawk | 13/05/2017
What Materials Are Used to Make an Electric Screwdriver?
Electric screwdrivers are made from mostly plastics and metals, which are also used to make a variety of other hand and power tools. (Goodshoot/Goodshoot/Getty Images)

The electric screwdriver is a common home maintenance tool that is built from the same type of materials that most power tools are made from: plastics and metals. Portable electric screwdrivers also include rechargeable batteries made from chemicals such as a nickel-cadmium compound. Small amounts of circuitry are also often incorporated into newer models to control torque and electrical flow, which is built upon a silicon circuit board.


What Materials Are Used to Make an Electric Screwdriver?
The plastics used to make electric screwdrivers are tough, chemically resistant and able to be shaped and coloured in any fashion. (Jupiterimages/Polka Dot/Getty Images)

The same type of plastic used to make electric screwdrivers is also often used to make many other commercial products, such as DVDs, bottle lids and automotive parts. The plastic has to be somewhat flexible so that it does not crack or shatter on impact and durable against climate conditions, oil spills and other conditions in the outdoors or a workshop setting. Polystyrene and polypropylene are two of the most common plastics used for power tool housings that have these traits.


What Materials Are Used to Make an Electric Screwdriver?
Metals are crucial elements of electric screwdriver construction that make them durable and versatile tools. (Photos.com/AbleStock.com/Getty Images)

The three most common types of metal used in an electric screwdriver are steel, aluminium and copper. Steel is used to make the gears, clutch assembly and bits because of its superior strength. Aluminium is used for the interior housing for its lightweight, durable qualities. Copper is used to make the windings for the electrical motor and other electrical wiring connections for the tool.


What Materials Are Used to Make an Electric Screwdriver?
Control circuitry in modern electric screwdrivers makes them more efficient, with longer-lasting batteries. (Hemera Technologies/PhotoObjects.net/Getty Images)

Silicon is used as a circuit board base in many modern electric screwdrivers. Transistors and other electrical components are built onto a silicon wafer base. The circuitry acts as a form of advanced control system to keep the power level of the tool at exactly the right point. The controller also acts to cut or reduce power to the motor as the level of desired torque is reached in the tool so that components are not overstressed and damaged.

Chemical Batteries

What Materials Are Used to Make an Electric Screwdriver?
Rechargeable batteries have made electric screwdrivers much more convenient and portable than corded versions. (Comstock/Comstock/Getty Images)

Rechargeable batteries are a key component of any cordless electric screwdriver. They are usually made from one of three types of compound mixtures. A nickel-cadmium (NiH) battery was the most common until recently. Newer battery designs use nickel-metal hydrides (NiMH), which give a longer-lasting charge to the battery and are easier to dispose of, as they are less detrimental to the environment. Lithium ion (Li-Ion) batteries are another common type used, but they can lose their ability to recharge if fully discharged.

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