heat sink paste

I have used it for it's intended purpose, but I don't see any use for it in heat treating. It doesn't take long for it to dry out and sort of flake and crust, and stop doing it's job. It only works while it is in a wet state, or at least that has been my experience with it.
 
ahhh, that is kins what i was wondering about. I thought it may be usefull to protect odd shaped blades or saw teeth or serrations during heat treat, or maybe to help develop better hamons.
 
It is merely a semi liquid media to suck heat away from areas you are trying to keep cool at lower temperatures.It is good for protecting the blade temper while soldering guards. I hardly ever use it,or its jewelery equivalent, because proper flame control and joint preparation are far more important.Relying on something to save the blade from a bad soldering job is pointless - learning to solder is the thing.
It would do nothing for heat treatment,as it would cease to function at extended ( more than 10-20 seconds) hot exposure.
 
I have not used this for HT myself but I do have a student who used it on a smaller hunter/skinner. It worked well. He got a killer hamon. He put it on and stuck the whole blade into a bean can forge. Brought it up to non-mag and quenched in oil. He did this wet. He is the impatient type but I had to see if it would work. I used furnace cement, the kind in a caulking tube, used a calking gun and clay backed the blade. It is 12 inches long and about 1 inch wide. I heated the wet cement with the torch slowly until the skin set up. I then took it to non mag and quencehed it in hot peanout oil. I have not finished the blade but initial etching looks good. The furnace cement did not pop off or even crack before the quench. Some came off as expected in the quench but I had to scrape most of it off. I'll post some pics when I get the blade finished and etched.

Chuck
 
It can be used as a polishing paste since it has silica in it but there are far better products for that. I have only used it in electronics on semiconductors to make sure there is good heat transfer to the heat sink.

Anytime I get a new computer or mother board the first thing I do is pull the Processor and apply heat sink compound between it and the heat sink. My processor always runs much cooler and lasts years. It should be done on all motherboards by every computer manufacturer but it isn't.
 
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