DIY hard drive clock (part 12)

Hard drive clock. Final part.

Well, unit is pretty much completed. Hard drive platters are humming a little bit but I wouldn't consider it as significant flaw. Overall it's a very impressive gadget and it shows time as well.
   

As final visual touch I placed blue power LED indicator behind front panel grid.
Front panel's custom label is made using heat toner transfer technology. It works the same way as for PCB fabrication.
For protection aluminum panel is covered with matte acrylic lacquer.

DIY hard drive clock (part 11)

Hard drive clock cover.

Old cover for hard drive case had to be modified to suit new purpose of reworked device.

4" diameter clock window is manually cut in cover.
Although cover is made from light and relatively soft alloy but it was too tough for manual nibbler so I had to drill series of 1/8" holes along circle then rip out round window and finally smooth edges with file. 

Whole cover repainted flat black and covered with transparent acrylic lacquer for additional protection.  

Illuminated clock dial is attached to cover with hot glue.  

DIY hard drive clock (part 10)

Illuminated clock dial.

Main purpose of clock dial is to seal hole and keep dust away from sensitive mechanical parts.

At first it was intended to be just a dust cover but, since whole device resembles a mechanical clock, I've added simplified hour marks to it.  

Hour marks are milled using drill press converted into manual mill by adding x-y table.
Edge-lit technology applied to acrylic dial make it much more attractive (well, next model may include second edge-lit acrylic layer with engraved digits).

Dial is illuminated by 4 high intensity blue 3mm LEDs embedded into its sides.
Each LED is inserted into short slot and secured with hot glue.
All four LEDs are wired in series with resistor and connected to 12V circuit.
To achieve comfortable soft brightness, LEDs current is limited to 5mA by 470 Ohm resistor.