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A bit of trivia


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#1 harkcomp

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Posted 07 October 2014 - 10:17 PM

I'm just curious to learn......
 
What is a hard drive disc made out of? Is it just plastic like a plastic CD, or is it some kind of metal?

Edit: Moved topic from Windows 7 to the more appropriate forum.~ Animal

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#2 Animal

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Posted 07 October 2014 - 10:38 PM

Platters are typically made using an aluminum or glass and ceramic substrate. In disk manufacturing, a thin coating is deposited on both sides of the substrate, mostly by a vacuum deposition process called magnetron sputtering.


Quote From: http://en.wikipedia.org/wiki/Hard_disk_drive_platter

The few I've torn apart over the years had aluminum core platters. With hard layers of some material coating them. They make awesome signal mirrors and with a pair of shears can be made into some pretty... Ummmm Nevermind.... :P

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#3 NickAu

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Posted 07 October 2014 - 10:47 PM

 

They make awesome signal mirrors and with a pair of shears can be made into some pretty... Ummmm Nevermind

Seems you are not alone Animal.

 

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#4 Condobloke

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Posted 08 October 2014 - 01:03 AM

If you have an IBM drive, chances are the platter will be constructed of glass.  They shatter if twisted/bent


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#5 mjd420nova

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Posted 08 October 2014 - 05:26 PM

I've never seen any glass platters.  I've resurrected hundreds in a clean room and not seen anything but aluminum with a silcone coating and the magnetic medium suspended in the coating.  Really good at keeping birds and vermin out of the yard when hung in the sunlight.






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