wideford wrote: Branwen wrote: I saw a water feature that had a smooth wooden ball which rotated endlessly in the cup shaped pool. I wonder how strong the flow would have to be to make a stone ball do that... She said shamelessly hoping the three years of geology might pay off again and you could suggest an easy to carve "lightweight" stone.... LOL
soapstone
Problem with soapstone is that it probably erode away to quickly. Unless you were gonna just keep replacing it, which would be fine!
|