How to remove OEM thermal "stuff"

[TekieB]

I have this OEM hsf off of a computer i'm redoing for a friend, and I cleaned out the heat sink and fan (dusty) and I can't figure out how to get the grey TIM off the bottom of the sink, It's like hard, and rubbing alcohol doesn't work. I want to take a screwdriver to it, but that sounds like asking for trouble. Any suggestions?

 

[whitewale]

I found a razorblade the best tool, followed by acetone and a bit of 600 grit wet paper.

 

[TekieB]

Thanks! That seemed to do the trick

 

[jackbauer]

acetone is good, but i found if you have access to brakecleaner, it works really well.