Yeah. It's weak when somebody does this really cool mod and then just throws a huge sheet of plexi underneath. That's like building a salt palace next to a lake: It's just not cool. (If you're one of the nerds that watched the show, you know what I'm talking about. But if not... they built huge and extravagent rooms out of 100% salt!)
Now, what IS cool is using a salt mine to store priceless works of art and.... of man... I can't beleive I watched that whole thing!
At first I was planning on melting the plexi into place. Then I thought about shaving the inside of the xbox at just the right places. But yeah, taking the time to make a perfectly tall enough ledge on the plexi is probably best.
Monke pointed out the idea that I should warp and bend the plexi so that it looks more like flames with the light shining on it. I could also throw in tiny bits of colored plastic to help with the effect. Somewhere around here I got the idea to use somewhat dim LEDs along with the Cold Cathode, to add in subtle lighting colors. Man... that would take a while to position.
What kind and thickness of plexi do you people usually get when doing a mod? Since I'm probably going to be bending and warping it, I think I'm gonna get a sheet today so I can practice and experiment before designing the xbox case anymore. (You know... to check how feasible some ideas are, etc)