what grits do i need?

[corei5]

planning to paint my case and idk what grits i need to use to take off the original paint till the last coat to make it glossy. also for lapping CPU.

Thank you.

 

[Hefemeister]

For lapping check out slaymate's guide.
http://www.techist.com/forums/f10/cpu-lapping-guide-228558/