Mike C wrote in news:1177349381.584137.296550
@y80g2000hsf.googlegroups.com:

I am trying to make some contemporary looking planters. Since concrete
would be too heavy, I have turned to Hypertufa. My question is what
can I do to make the planters look more like smooth concrete than aged
stone? I would imagine using the smallest perlite or vermiculite
possible would help. Any other tips?



Why is that the look you are going for? I sort of like the wire-brushed
look of hypertufu but that's a serious question as to why you want a smooth
look. How about starting moss on the outside of the pots? Pick up some
moss, put in in a blender with buttermilk (proportions don't seem to
matter) and pour it over the outside of the pot to grow new moss to cover
the rough exterior.