Razor blade. I unfortunately didn't have a vise, but I had a hammer and a block of wood though. As much as delidding improves things, I don't think I'll do it again until the chips become $200 or less. With the money I have to spend now to get a replacement that I don't even have money for right now, I could have easily just bought an X79 and a 3930K that I wouldn't have to delid, but I don't really like buying stuff based on older process nodes. I really wish Intel would at least have the balls to go back to what they used on the Prescotts, which was a thick, metallic paste that had to be lapped off. Now they are just being evil bastards.