Place the concrete mixture in the mold.  Your mold needs to be water tight. Fill mold until top is flat, tapping to encourage air pockets to disappear.

This is the fun part! Do a little dance and gently tap and shake the mold to release air pockets. Thanks to our special formula you don't need any mechanical assistance for vibration. Leave mold on a level surface, in a cool spot.

At this point the Grey Matter should be level, if anything is sitting out rub in gently with a damp finger. Pat pat pat, nice concrete.

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