Tonkputer 'Cow in a churn' mod
 

The first step was to cut two holes in the main body: one for the window in the front, and a smaller slot in the back for the rear ATX motherboard connectors. Cutting straight lines on curved surfaces can be tricky, but use the old rule of measure twice; cut once, make sure your piece is held down with a vice, or an assistant, and use a steady hand.

In this instance, I used a combination of angle grinder, jigsaw, Dremel, and iron saw to make these cuts. I use a file to smooth the edges for a neater finish, and so I wouldn't cut myself.

LInk
http://www.bit-tech.net/modding/2005...nkputer/1.html