This is my loverly case. As you can see there is an extra bit of platic moldered to give it the shape. THe steel (or whatever metal it is) is about 1mm. What I want to do it put 2 blow holes in. One on the side cooling the PCI cards and CPU area and the other at the top as an exhast pulling the hot air out.

1. What do you think of the idea.
2. What should I buy to cut the metal and plastic (in the UK)
3. Will the plastic cut or just go bad

Its going to be done in the summer once I have done my exams.