Quote Originally Posted by Roxy View Post
I tried this and the heat sink grease I used ended up drying out and getting crumbly. Did I just use the wrong grease?
It's hard to say. If the compound was metallic in color, I believe drying out is what is intended - improving the bond of the remaining silver-laden part. The problem with that is any mechanical movement breaks the bond and the compound has to be cleaned off and reapplied. I used the old school white grease that seems to never dry out. Just a bit along the edge that the set screw will push against the block.