Using Heat on Stuck Things, it works based on Physics

[John Larson]

I'm no expert on the physics of metals either;  (Surprised?)
Grab a torch, affix a "rosebud" (you welders know what that is), and make
that pipe glow.................  The offending inserted part will d*mn near
LEAP out.  BTDT, more than 45 years worth.  Heat can be a wonderful thing in
the world of machinery.  Often, the more the better.  Makes tight things go
together, makes 'em come apart.  You can drop a press fit gear or flange
onto a shaft, and you can make it come back off with ease.  You can remove a
broken stud by getting it red hot and hitting the O2 for a split second, and
not damage the parent metal (trust me, don't try that at home!)

Of course , that's just my opinion, I could be wrong....... John