A person I just met was showing me his Bridgeport mill which he had
repainted. All over the top part of the base there were brown splotches
showing from under the grey paint. He said it was from the oil that had
soaked into the casting that he didn't clean well enough. Hopefully soon, I
will be cleaning up and repainted my BP so I was wondering how you get the
oil out of the metal pores. Can it be done with just solvents or do I need
to bake it out?

Thanks.
Steve.



Or, he may not have known that primer is porous and you therefore have to
topcoat it fairly soon before the rust starts underneath.

That's one most people learn the hard way.

John Martin