Again, I Come Seeking Guidance and Knowledge: Aluminum Mould Cleaning and Resurection

I recently acquired a Rapine 319125 mold. It seems that in its former life it had been exposed to a bit too much water. :(

The bullet surface appears to be in serviceable condition, however the balance of the surfaces have a bad case of aluminum cancer (white and darkish grey corrosion).

I am very practiced in corrosion control and repair on aircraft structures, but I am not certain these methods would be conducive to the longevity of an accurate casting of a bullet mold. What can I do to restore this mold without damaging the molding surfaces?

Had a similar question a while ago on a Lee 6 cav. My final decision was more or less if the bearing surfaces clean up in the size die its probably better to leave it as is.

https://castboolits.gunloads.com/sho...ee-6-cav-mould