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had a nice new deep crack in the pva, I was able to pick out a chunk about
1" by 2".
it would be a nice sized piece to play chemistry on.
I will prob stick in in a pan of brake fluid, maybe a side by side comparison 1/2pan of brake fluid pan 1/2 pan of water.
Water does the trick you just need to be more patient than the owl on the tootsie pop commercial...
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