You can use a purchased mold, a pizza box, or make a mold with pieces of lumber cut to size. For this stone, I made an octagonal mold from cardboard, then lined it with a piece cut from a plastic grocery bag. This way supply costs are minimal! The letters can be left in, or removed to give an engraved look.
By Lonnie from Chatsworth, CA
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Stir up your own cement and add seashells, broken pottery and glass to create a colourful stepping-stone for the gardener on your Christmas list.