Various Star Bit screwdrivers
When we first started scrapping computers we were selling the hard drives whole but we found out that we were losing money on them as a whole. So we started tearing them down...The lid is generally sheet aluminum and the rest of the case is cast aluminum, while the disc itself is plated in platinum.
The problem is that nearly every hard drive maker uses different sizes of star bit screws....Some of them have three different sizes in one hard drive...The more hard drives we got the more runs to the hardware store I had to make for more star bit drivers.