Re: Sanding the CPU? What?
It's not difficult, but if you mess up, say good bye to your processor. Well, not exactly. It's just if you screw up, you might severely ruin it...and it will run even hotter, if done incorrectly.
iMac 27" 5K Late 2014 | macOS 10.15.2 | i5-4690 @ 3.5GHz | 32GB DDR3-1600 | R9 M290X | 1TB HDD/128GB SSD