Reply to Atari 7800 Casing - Midi Fighter Mod

Hello,

This is my first project. I've recently purchased a midi fighter. I'm going to add 2 rotary , 2 slide potentiometers and 4 extra arcade buttons. This is all going to be re-housed in an Atari 7800 casing.

What would be the best way going about getting the 24mm and 28mm holes bored/drilled and the spacing for the sliders made without damaging the casing?

Any advice would be much appreciated.

Here is a pic of the case I'm going to use.