Hi,  I'm just curious about this method of saving pot metal parts,
for two reasons.  First, I understood that the deterioration of pot
metal parts was from some sort of internal 'corrosion', due to minute
contamination of the original materials.  That suggests to me that
'sealing' the part with a surface plating might not actually accomplish
anything.

Second, I have seen many pot metal parts (in phonographs and Violanos)
that are plated with what looks like nickel swell up and disintegrate,
just like the un-plated parts.  I know that there are several
metallurgy experts on the MMD list so I'd really like to hear what
they have to say on this subject.

Looking at it from the opposite direction, perhaps a thick plating
would sort of 'glue' the loosening parts of the part back together,
at least temporarily.  So, what do you experts think?

Regards,
Craig Smith
from Western New York State