I am looking for a magic bullet

For the wax to work you just heat the metal enough so that the wax wicks into the parts to be disassembled.
Vaiper is not the goal.
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1977 Kingsley 455 as stock as it gets except lots of Ragusa parts
 
I kept putting wax on it as it cooled down. When it cooled down enough to allow liquid wax I added more. It was covered in wax that finally
solidified. I waited for 24 hours before trying to disassemble the fitting. That is not saying that it would not work in other cases.

The only difference here is I started with it being much hotter than it needed to be to melt the wax.
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Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
 
Every methods is just a crap shoot except to replace it all with new imho.

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1977 Kingsley 455 as stock as it gets except lots of Ragusa parts