Or on corners that had been rolled and trimmed back to sharp.
I think vacuum is used as part of the encapsulating? If they wet the corners to help roll them out and not allowed enough time to dry- Or left it damp purposely so the thinner corner would be thicker- I can see the bit of vacuum forcing the residual dampness out and doing that damage.
All of which could also happen with rebuilt corners.
Still not the best advertisement for PSA.
Steve B
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