I put the Akasa 12cm fan in the side of my case by first drilling holes successively larger until I could put the jigsaw in.
I'd marked out a maximal and minimal pair of concentric holes (I'm not interested in perfection) and so got down to it.
Pieces of advice:
1. Make sure you mask off the case. I hadn't realised that the actual jigsaw would scuff/scratch the case under it's entire body. (Dumb, I know). Not that this matters on my shit case hidden in the dark.
2. Fix the case to a rigid object before commencing any cutting. The whole case (or side panel) vibrates and moves around like nobody's business; as do your arms and your eyeballs.
A combination of the above factors meant that I didn't cut the hole in completely the correct shape (its a bit too big on the lower left hand quadrant for a length of about 20mm and peaks up to 4mm of extra hole, in a tangential direction).
Still the motherboard is cooler, the case looks cooler (thanks to the 4 funky lights in the fan, and the Biochem warning grill).
But if you want to do it properly, don't cut corners like I did.
I can honestly say that I could never cut an accurate window in a case.
Originally published on 16:36 Tuesday 06 April 2004