Old Disk Box... How to Cut?

[starhawk]

Hey, folks. I have this old-ass (bordering on antique) floppy disk box. For some weird reason, I'm thinking of turning it into a Mini-ITX build

Here's the problem, in a nutshell. In order to fit everything inside, I have to cut at least two roughly rectangular holes. One on the back for the I/O riser, which (in that area) would be beige plastic of unknown composition. I'm not worried about that, it doesn't seem brittle; besides, there are some divider-mounting tabs in the bottom that I have to get rid of as well.

It's the hole in the lid that worries me. That lid is "smoke" (transparent brown) clear plastic, probably acrylic. I've not got the faintest idea how to make a hole in that -- and it needs to be about 3.25" square.

I have, for tools, a Rockwell drill, a crappy jigsaw, and (if I ask nicely enough) my father's Dremel set. I'm leaning towards using the Dremel if I can, mostly because I at least have a little productive experience with it (unlike the jigsaw, with which I am only competent at making the blade jam in something). I also have a number of hand tools, but I don't think I have the patience to use them

Oh, and as if this didn't already seem like a bad idea, I have exactly one disk box, unless someone wants to mail me one to practice on. I only get one shot at this; if I screw up, I'm sunk. So... how do I do this thing?

 

[munkle]

Just put some thin wood on the front and back of the acrylic to brace it and use a dremel to cut it.

 

[Gordo74]

I'd say Dremel and PRAY you have a steady hand.

 

[starhawk]

Umm... Gordo74, no offense, but if you've *ever* seen any photo I've taken, you would not be saying that. I don't think my hand would be "steady" even if I were paralyzed

So... how much harder is it assuming that my hand has enough tremble to give my camera a good case of motion blur? (Note that most of my --still very blurry-- photos are taken with the "sport" setting!)