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.
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.
You can also give it a different look by using colored grout between the pieces of glass. (Putting the grout on the glass may change the perceived color of the glass in the finished product.) Flat metal punchouts are great for garden stepping stones. Wildlife garden (or other trade) tools and zodiac are all possible themes. Small colored stones could be used to make the constellations. Some garden stepping stone basics make sure you can get the finished stone out of the form by lining it with plastic wrap (rememberwrinkles may show or the plastic become trapped in the stone) or using a nonstick spray; make the stone 34 inches thick so it can stand up to traffic; let it dry for several days before you remove it from the form.