Hi I wanted to share my experience with conductonaut.
For delidding my 8700k I used a 3dprinted tool : delidder.turbo 2 from thingiverse
Before Delidding, mark the position of the heatspreader with a permanent marker.
It uses quite a lot of force for delidding, but it worked without damage, try on other cheap cpu's if you have'em laying around.
Try to memorize, or somehow scratch a slight mark where the die was positioned on the Heatspreader.
The cleaning process was straight forward, use some rubbing alcohol, Roboto (in europe), to clean everything.
I used a fine sanding pad (Scotch Brite 96 15,2 x 22,9 cm Medium Pad) to sand the underside of the Heat spreader, just a bit to make conductonaut stick better, then cleaned everyting again.
Now if your CPU has resistors and capacitors around the die, I used some clear varnish/paint for cars, I got a small Clear Coat Touch Up Paint with Brush kit and painted the blank pins on top of the 8700k.
For the application of the conductonaut I first pressed out a little bubble on a sheet of paper to get a feeling for it, then i put that bubble on the die. You have to use the absolute minimum to get a filling silver coat, no puddles!!!
If there is a little puddle you can suck it up with the conductonaut seringe.
On the Heatspreader: also put a minimum on there, and "paint" the conductonaut within the markings you've made earlier.
Now it's time for relidding, I used something like "Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker" and just used 4 drops on every corner of the Heatspreader. Than put everything in the delidder/rlidder tool and pressed it together. After 30 min, I put everything back on the Motherboard.
Since my AIO has a copper plate, I also used conductonaut on there, always apply on both sides, and always sand the contact areas a bit (exept the die!!!)
After the modification, my CPU had a drop of 15° with the same settings, in prime95. It runs a lot more silent now.
Because this went so awsomly well I also used it on my Laptop (Lenovo Y50-70), which resulted in much cooler -10° temperatures, and autoclocks higher.
On the PS4 pro (it has a copper coolerplate YAY!) which went from dyson like in horizon zero dawn, to very modest Fan noises.
On my Good old PS3 Phat between the Cpu/Gpu's and heatspreades (what a pain to get those of...) which went from very loud in GTAV to nearly silent (unbelieveable), Here you can't use The conductonaut to the cooler, because contact plate is made out of aluminium.
For those three the clear coat paint on the compnents around the dies is a must.
I hope I could summarize the whole process for some people, if there are questions, just ask, and post your experiences too if you like
