I built a hackintosh to replace the outgoing Mac Pro a few months back. One problem I ran into was 5 hard drives into a case originally designed to be stuffed to the brim with fans. The original position for the 2(!) hd sleds were nothing more than a compromise; they had to allow for all that cooling to insure the ridiculously hot CPUs previously inhabiting this space wouldn’t melt into a pile of grey goo.
So I go online and there are people with a fantastic amount of time on their hands. Like, the machines they built into the carcasses of dead G5′s and Mac Pros are on par with what you’d experience pulling these boxes out of the package for the first time. I am in awe of their dedication.
I am not that dedicated.
When I’m done with this guy, it’s going to sit under a desk and not once will I bring up to guests my endeavors taken to get it set up and running reliably. No tales of tales of tucked wires and framerates. Eye rolls averted, lets move on.
Back to the task at hand: I need a hard drive cage to store the 5 hard drives. I tried ripping out the pressed aluminum cage from another dead PC, but there was no place to attach a fan without running additional sheet metal. I threw open Google SketchUp, thinking I could design something to get cut and folded at the local metalshop. Then that voice came from the ether, “… dude, this isn’t going to gain any HP at the wheels. You aren’t in Fast and Furious. Let it go and function over form it already.”
So I went to Home Depot and purchased a galvanized air vent register.

The width is 4″, just like the standard HD size. So with that and some tin snips, a hand drill, and some household items I created a $7 hard drive cage.
Trim down the collar and we can get to work cutting the tabs for the fan.

Tabs roughed out! Time to check out how the fan sits…


I created a stencil of the HD shape on an index card. That way I can mark where the drill holes should go.


And here it is in the case. The fan pulls in the air from front cheesegrater just fine. I am going to revisit it at a later date and add fins in front of the fan to even up the flow but for now none of the HDs are getting too hot. The previous temps were around 130F now they idle at 80F and go up to 99F during activity.





















































































