HDD roof mount for Fractal Define C

You can fit 2 extra 3.5 inch HDD in the roof fan holes of your Fractal Define C, for this print you will need 4 HDD screws (you get a bunch with your case) and 4 M3x10 screws with 4 nuts. to mount the thing to the fan hole slots in the top of your case. 

The holder mounts to the HDD with two gaskets (blue in the assembly pic) printed out of TPU to absorb some vibrations, you can also print out 4 bumpers to put on the M3 screws but you will ned longer screws. If you don't have TPU its totally optional, or if you don't care about the sound from the hard drive. The two washers and the main part should be printed out of PETG or similar. 

Use paint on support as seen in the pic