How to Make a Garden Trough

To keep the hypertufa from sticking to the form, the wood must first be coated with a release agent. (For instructions on making the form, see the overview page.) You can use petroleum jelly or a piece of plastic sheeting. We brushed on a layer of melted paraffin. Later, any paraffin residue on the trough can be easily removed with a wire brush or flat putty knife.