Stepping Stone / July 5, 2018 / Christine
The two types mostly used are Polyurethane and Plastic. Advantages of Polyurethane Molds are that it provides extremely high detail in your concrete mold product and are of the toughest material around. You can use Polyurethane Rubber concrete steppingstone molds a great number of times over the years and is great value for money. Its a sound investment. Plastic on the other hand my be the cheaper option for now but will cost you in the long run as it deteriorates rapidly with age handling and exposure to the elements. Making you own garden steppingstones with Polyurethane Rubber Stepping Stone Molds is by far a better option as to buying expensive steppingstones from the market which may discontinue at any time.
When using shaped objects (such as pebbles) where you dont want them buried in the concrete but would like an even surface after placing them on top of the stone cover with a piece of wood larger than the stone and press evenly. It may take a few tries to figure out the right pressure but the professional look will add to its attractiveness. Besides pathways your garden stepping stones can be used as points for a sundial to ring a tree as wall or raised bed decorations even tabletops or to line small pools and fountains.
Normally there are 3 types of base material used depending on the use of the stone. Regular concrete is used most often when a stone is actually part of a pathway and decorations such as small mosaic tiles or colored stones are used for visual effect. Stepping stone concrete is used when a more intricate pattern (or 3d effect from a mold) is used. It is finer grained so there is less likely to be an air pocket in a detailed area. Finally there is plaster of paris; it is VERY fine grained and will hold the best detail of all; but lacks the strength necessary to hold up under harsh weather or traffic conditions. Garden stepping stones of this material should be ornamental only and in an area protected from weather and harsh temperatures.