How are you guys getting the nice round cuts to mount that fans to the side of your cases? I have mounted a 120mm fan to the side of my comps case to blow onto the vid card and hsf. I used a hole saw to make the cuts for the 80mm fans that I used to have mounted on the side of my old comp, but that is so slow, and stretches the metal. With the 120 mm fan on the side of my new comp, I used a cup that was just a tad bit smaller than the hole that I needed to make, then drilled a large hole in the center. I then took a jigsaw and cut several straight lines out to the edge of the hole. Then I took a pair of snips and cut off the tabs that were left. It works, but now I have sharp edges, and it doesnt look all the professional. How are you guys getting your nice cuts, and what kind of tools are you using to make them?