He found a slice of petrified wood cut by his grandpa that had saw marks in it from the original cut. After polishing it using a refurbished belt sander found in the basement collection (it didn't work until his magic was performed), Dave drilled a whole in the center and attached a clock and numbers for his desk at work so others can tell what time it is ... or maybe so they don't lose track of time chatting. ;-)
When I first married Dave in 1989 it was often said in his family, "It's a Harvey thing".... I understand this love of nature and mechanical wizardry now. It is in his blood. This also helps me understand why everywhere we go I get a small but awesome looking souvenir rock that he found there, I have a whole jewelry box full of these memories. I even have them marked from where we were when he found it. Maybe this is odd, but our family photo album is also filled with pictures of plants, shrubs, birds, trees, flowers, etc, and even my two grown children do this now. I have grown accustomed to it as I understand, "It's a Harvey thing". My photo album are of the people I love and of the artistic projects that they do, although I don't get into the naturey thing, I do appreciate it and love them that do.