What are the platters made out of.

[Tony Montana]

I toko apart my old HDD last night and took out the platters they are PERFECT!!!!! what are they made out of? they loko like really hard glass and metal or something.

[Lazn_Work]

Depends on the particular drive. These days most are Glass with a magnetic coating, some are still Aluminum Alloy.

http://www.storagereview.com/guide2000/ref/hdd/op/mediaMaterials.html

==>Lazn