Materials list

 Collection of small stones

 One bag of Type S mortar mix

 2' x 2' square piece of 6-mil poly

 48" x 48" x ¾" plywood

 Forty 1-1/4" corrosion-resistant screws

 Optional items: mortar pigment or colored grout, muriatic acid and stone sealer

Cutting list

KEY

QTY.

SIZE & DESCRIPTION

A

1

18" x 18" x 3/4" subbase

B

1

12" x 12" x 3/4" base

C

12

2-1/4" x 15-3/4" x 3/4" frame

D

4

3-1/4" x 12-3/4" x 3/4" sides

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1 Assemble the mold. This plywood mold goes together quickly and comes apart easily after the mortar hardens. And you can use it again and again.

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2 Spread dry mortar in the form. Fill the plastic-lined form to about 3/4 in. from the top edge with dry Type S mortar. Level it with your gloved hand. It doesn’t have to be perfectly flat.

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3 Arrange stones in a pattern. The only rule is to keep the stones close together so they touch and stand up and are not laid flat.

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4 Tamp the stones to level the tops. Lay a board across the stones and pound on it with a rubber mallet to embed the stones in the dry mortar and set the tops level with each other.

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5 Sprinkle the stone. Adjust your spray wand or sprayer to the finest spray setting and sprinkle water over the completed stepping-stone to wet the mortar.

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6 Tap on the form. Tap on the form with the mallet to remove air and help the water penetrate. Continue sprinkling and tapping until is seems like no more water will be absorbed by the mortar.

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7 Pull off the mold. Allow the stepping-stone to harden and cure for at least two days. Then carefully flip it over and remove the mold. Clean it with water and then acid if needed.