Question about blowholes and fan grills

[Quad]

When i drill the four holes around the blowhole for the fangrill, are the same holes used to secure the fan on the other side? so when i attach the fangrill to the holes, do i use the same screw to secure the fan?

if not, then how do i secure a fan onto the sheet metal. i'll probably be using self-tapping screws

thx in advance

 

[SWScorch]

yes. screws go through grill, through case metal, and into the holes in the fan.

 

[phatstyl]

i recommend going to your local HW store and finding a set of nuts and bolts with the same diameter as the hole, with these you can easily add washers and an additional fan grill on the inside of the case

 

[Sorgon2]

Rubber Gromets are also a great idea to use on those screw holes. It cuts down on noise/vibration. I think 5/16" are the appropriate size to use, but take a screw with you to your local hardware store to be sure. Good Luck!

 

[skillet]

If you can't find rubber grommets, rubber washers work well too!

 

[tazdevl]

I found something a bit better than rubber grommets for my case. Thin enough to ensure that the fan is close to the top of the case... tiny O-Rings. They are are thick enough to minimize vibration and keep the fan close enough to ensure all the air is going out of the case.

I put bolts through top grill and case, then o-ring, fan, o-ring, bottom grill, o-ring washer and nut. Plenty clean and vibration free.

Try 8-32 bolts 1.5" long. Should work fine if your drill bit was just about the size of the hole on your grill you used as a guide.