Post #398546 by MadDogMike on Sun, Aug 3, 2008 7:30 AM

OK, was it Chip or Andy that was digging through the basement archives to drag out this old post? (2002!) :)

Probably too late for ChiefGray's Moai, but a common technique to make concrete look like aged volcanic stone is to press rock salt into the concrete when it is wet, then wash the salt out when it cures. One caveat is that the salt washes into the surrounding soil and can make it difficult for plants to live nearby.