If theres one case getting a lot of attention today, it's the new Antec Three Hundred. For under $50, (even less if shop around) it packs a lot of features with decent cooling and the superior build quality we've come to expect from Antec.
Antec 300 Three Hundred awaits it's first incision, a window!
To draw out your design, I'll first apply either #2060 Green or #2090 Blue "low tack" painter's tape by Scotch/3M.
You can buy these Home Depot or Ace Hardware stores. You also apply tape so you don't scratch up the panel with the jigsaw's steel guard. I always use a measuring square for windows
Window corner, but how do you make a curved corner instead?, for inserting
U-channel molding later
For making corners, use a roll of tape! The smaller the roll, the smaller your arc
Whenever I make a side panel window, I always use a jigsaw with a 18 TPI (teeth per inch) bi-metal cutting blade. I'll make the intial incision for the jigsaw blade with a rotary tool and 1.5"
reinforced dremel cutting wheel 
I use a Black & Decker jigsaw with a 18 TPI (teeth per inch) bi-metal cutting blade.
Window is cut and ready for refinements, ie: clean up the edges and corners
I'll use a rounded side file for detailing it's straight edges and corners
Antec 300 case project 
One of these days I'll have order me up a set for a mod, they do class it up, you cooking up any new case feet in the near future?
Linear Mode
