CobyRupert
Super Member
Other day, someone mentioned trying to get something apart.
I think they used penetrating oil on a bolt/nut then applied some heat to “draw the oil in”.
I’d heard of that before but how does that work? By what principle?
I got curious in what actually forces one is trying to overcome when something is frozen.
My understanding of heat is you’re trying to get metal to expand.
But aren’t you really trying to get the nut to expand at a faster rate than the bolt?
If possible, wouldn’t freezing (bolt) work was well? (Depending on shape of expansion-to-temperature curve of that metal)
Should one only heat the nut and keep bolt as cool as possible?
Would heating nut (and bolt too, because it’s going to get hot), but then shocking it, or cooling it rapidly with squirts of water be more effective?
I think they used penetrating oil on a bolt/nut then applied some heat to “draw the oil in”.
I’d heard of that before but how does that work? By what principle?
I got curious in what actually forces one is trying to overcome when something is frozen.
My understanding of heat is you’re trying to get metal to expand.
But aren’t you really trying to get the nut to expand at a faster rate than the bolt?
If possible, wouldn’t freezing (bolt) work was well? (Depending on shape of expansion-to-temperature curve of that metal)
Should one only heat the nut and keep bolt as cool as possible?
Would heating nut (and bolt too, because it’s going to get hot), but then shocking it, or cooling it rapidly with squirts of water be more effective?
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