My case has some built in fan grills that are built into the case I want to cut them out it will be very minimal and I was wondering if anyone has used this?

http://www.xoxide.com/nibbler

Not having any luck with the link just search for nibbler.

The link doesnt work but Ive always used a dremil.

NIBBLER
It depends on how thick the metal is on your case, SMeeD is right though a rotary tool (such as a dremel) is much easier...

I have used some cutters like these to cut mine out.

I use my nippler as much as possible over my dremel. The nippler works great as long as the metal isn't too thick otherwise it's the best route to go as far as I'm concern. Less filing needs to be done if you use the nippler than the dremel. Happy Modding to ya.

I used a electro powered Jig-Saw to cut my 120mm blow hole I have at the top of my case I haven't heard of the nibbler yet, but looking around the net it seems alright