The only comment right now is that it's a REALLY... REALLY... REALLY,REALLY,REALLY,REALLY,REALLY bad idea to be cutting with a Dremel with your electronics just sitting in the open air. The metal dust is probably all over your PCBs.
I recommend stuffing it in anti-static bags until you are...
Honestly, I think you'd be happier if you did. Imagine setting everything up only to find you have a bum chip that dies in a week. :p
I'd think it would make upgrades a lot easier, unless you have no frequent plans for this like some of us freaks do :)
A case is designed to protect your components from the random crap floating around your room. While a computer can work without one, why the HELL would you pay nearly $2000 for a computer and put a risk on it like that?
Get a case.
PS: Your post is freaking annoying. We don't need to...
On smaller parts like that you will want to do only a couple thin layers of paint on them... remember that paint adds thickness to objects, so when you are painting buttons and such don't lay so much paint on that it will stick or not be able to got back together after you paint.
Yeah, it was a bit tricky to find. From the main page instead of going to buy XPC on the left, go to "Buy accessories" in the middle...
or just use this link
http://us.shuttle.com/buy.asp
Bottom left is where you wanna look.
Depending on what generation it is, shuttle sells the bare cases they have scraped from RMAs on their website for $10 each (mostly to cover shipping)
Might wanna check if you can pick one of those up for a quick fix.