I just did an experiment with a semi dried out piece of claybar that was pretty clean. Triggered by "veal scallopini", but I may have gotten this from a long forgotten post. 
-Wet the lump of clay with QD,
-Placed it in a heavy freezer bag and started tapping it with a hammer until it flattened out.
-Re-Wet the clay and rolled it up.
-Placed it back in the bag and tapped.....
-After 4 passes the clay we re-softened.

-Wet the lump of clay with QD,
-Placed it in a heavy freezer bag and started tapping it with a hammer until it flattened out.
-Re-Wet the clay and rolled it up.
-Placed it back in the bag and tapped.....
-After 4 passes the clay we re-softened.
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