Actually, Cletis, I think Chemistry takes over: H20 + Fe eventually yields Fe(OH)3, good ol' Iron Hydroxide, a.k.a. rust...
Regardless of physics or chemistry, you are absolutely right though, the holes do form.
Tb, you have some good advice here, and I can assure you that lots of online help is available with the accumulated knowledge represented above. Keep after it, we need a few more 58's in the Gallery.
Richard
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