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Wurth, Page 2 |
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Coins have soaked
another 24 hours (about 44 total). They now weight 11.9g, so I lost yet
another 0.2g. I toothbrushed them, and hit them with a quick silver brush.
The Fel Temp reverse is nearly clean. The obverse is very slowing
clearing up. The Ant is still coming along, but it looks like much that
was underneath the bright orange and blue encrustation is that rusty stuff...
which seems to be the metal itself "exploding". Still minimal
loss of dirt on the two dirty coins. Going to let them soak a couple days
before I look at them again. |
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Coins have soaked
another 5 days. Weight is now 11.8g. I took a silver brush to them to remove
anything that was loose. About half of the head of the Fel Temp is
now cleaned. Little loss of dirt still. Probably half of the orange encrustation
has come off of the Ant. It is revealing bare metal, but I feel that is
due to the encrustation, not the chemical. All other patinas that are exposed
are still intact. Back into the container with them. |
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After another
5 days or so, coins now somehow weigh 11.9g. More has been removed from
the Fel Temp obverse as well as the ant. Dirt still seems to be about the
same. Going to keep soaking the two larger coins, and going to try a couple
others as well. Looks like it works great on some encrustations, but takes
considerable amount of time on others... but it seems safe. Might be an
alternative to zapping, and retains patina, even though it takes considerably
longer. |
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To the next page
Back to the table of experiments
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