Give Your PC A Port Hole

Step 4 Cut the Plexiglass so that it fits in the hole

use the adjustible hole cuter without the center drill to make nice circular windows. make them a bit big and then sand them down to fit dont get over zelous like me or else they window won't fit perfectly. Be carefull because once you cut all the way through the windows has a way of flinging the like a frizby.