Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to...
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Transcript of Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to...
![Page 1: Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to straight motion Usually made of metal Long History.](https://reader035.fdocuments.us/reader035/viewer/2022062721/56649f1b5503460f94c31741/html5/thumbnails/1.jpg)
Presentation by Shawn Vuong
![Page 2: Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to straight motion Usually made of metal Long History.](https://reader035.fdocuments.us/reader035/viewer/2022062721/56649f1b5503460f94c31741/html5/thumbnails/2.jpg)
What are they?
Screws are simple machines They turn rotating motion to straight motion Usually made of metal Long History
Around 200 BC, a Greek mathematician ( Apollonius of Perga ) worked out the geometry of the spiral-helix and laid the groundwork for the screw!
![Page 3: Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to straight motion Usually made of metal Long History.](https://reader035.fdocuments.us/reader035/viewer/2022062721/56649f1b5503460f94c31741/html5/thumbnails/3.jpg)
What do they look like? Have a head and a shaft Have a spiral track on the shaft Vary in sizes Varying shapes on the head of the screws
Flat Philips Star Square
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When would it use them?
To build structures To hang pictures To put together a chair To make a book shelf To hold together components of a computer
![Page 5: Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to straight motion Usually made of metal Long History.](https://reader035.fdocuments.us/reader035/viewer/2022062721/56649f1b5503460f94c31741/html5/thumbnails/5.jpg)
How do I use them?
To use a screw properly a person needs the aid of a second tool called a screw driver or a special type of screw driver called a power drill
Click on the link to hear a drill
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What colors do they come in?
Basic metal screws come in regular metallic colors Silver Gold Metallic Gray
Screws can also be spray painted any color
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What sizes do they come in?
Screws come in all different lengths Small Medium Big
Also the screw thread comes in many different sizes
![Page 8: Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to straight motion Usually made of metal Long History.](https://reader035.fdocuments.us/reader035/viewer/2022062721/56649f1b5503460f94c31741/html5/thumbnails/8.jpg)
Who should use them?
Anybody from the amateur to the professional carpenter should use the screw.
It is such a simple tool to use.
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Where can I get them?
You can get them from many retail and warehouse stores
You can also buy them online at stores like: Woodworker’s Supply The Fastener Superstore And of course Ebay
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How much do they cost?
They start at under $1.00
Can go up to hundreds or even thousands of dollars for specialized screws like the ones used in the space shuttle
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Why wouldn’t I just use nails? I don’t know.
![Page 12: Presentation by Shawn Vuong What are they? Screws are simple machines They turn rotating motion to straight motion Usually made of metal Long History.](https://reader035.fdocuments.us/reader035/viewer/2022062721/56649f1b5503460f94c31741/html5/thumbnails/12.jpg)
Summary Slide What are they? What do they look like? When would it use them? How do I use them? What colors do they come in? What sizes do they come in? Who should use them? Where can I get them? How much do they cost? Why would I just use nails?