Topband: aluminum "penetrating oil"

[Roger Graves <ve7vv@shaw.ca>]

I need to separate KLH 3 inch aluminum boom sections. When assembled 20 years 
ago I used Penetrox on them so hopefully they are not welded together. In fact 
one of them separated 1/2 inch then stuck. Would there be a “penetrating oil” 
that would help to free/lubricate these joints to make the separation easier?

Thanks and 73,

Rod, VE7VV


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