Originally Posted by t_ski
I just saw that somehad commented that it's very thick and was easier to spread if it was warmed up a little.
Our suggested method of a 5.5mm bead on centre is a compression spread, most good retail heat sinks are 50 psi + in pressure. Add some heat and the viscosity changes so the compound spreads easily on it's own (cures as they say) without entraining or whipping(as with a manual spread) in any air which will cause performance/reliability issues. Unless you are in a sub 60F ambient room temperature no warming should required.