You guys are right. I agree. The problem is that the Dremel was slow in shipping, so it would have delayed the build by 10 days.
I carried though with the minor surgery without stripping down the system. I spent a good 90 minutes covering everything with plastic wrap and painter's tape. I know exactly what you're talking about -- the stray bits of metal shavings -- as I had to do clean up work after receiving the case from Performance PC's (even after I had everything installed, I would come across bits of metal).
The holes are cut. All that is left to do is finishing the edges -- filing and fitting the rubber trim. After I remove all plastic and tape, if I see any signs of infiltration, I will drain the loop and strip down the box, clean, then reassemble. So far, it's looking pretty good. I realize there's a chance I might end up with a short. If so, I'll accept responsibility for that.
Don't try this at home, kids . . .
Pre-op photos after Informed Consent forms signed off on by unwitting patient:



Post-op, prior to filing:

By
jmkays