Delidding Intel 4790K with ‘Vice Only’ method.
Take a deep breath 
and give it a try! I was worried but it was surprisingly simple.
(But becareful and only if you are really sure about this, there are no guarantees and this will void your warranty!)
Used my cheap vice from Amazon, some painter’s tape around the vice jaws to not damage/scratch the processor, and some cloth in case the cpu falls down. No razor, hammer or wood block needed.
Make sure you align it very evenly on the vice jaws and go very, very slowly with the pressure.
I had around 25C difference between my second and fourth core under load. While core two would run into the high 90s, the fourth was only around low 70s – and yes, this is a 4790K that was supposed to be improved over the 4770K… yeah, right.
Now I get mid 60s in OCCT (non-AVX), 4.8GHz adaptive volts, for all of them, difference between the cores around 5C !
It took almost no power on the vice at all, the shear strength of the black ‘glue’ is really low. Was a bit nervous though, but it was much easier than I expected.
Much preferred this to the razor and even vice+hammer methods because it is much more controlled. But each to their own! 
Post time: Jul-12-2017