Prepare and stir the Rock Compound "Sandstone" with water. Afterwards, the compound is being applied with a spatula (or a knife). The coumpound will congeal after roughly 15 minutes. Due to the NOCH Rock Compound Sandstone's composition, the compound will naturally assume a rock-like surface during the drying process.
By breaking apart NOCH Foam Rocks and -Plates into pieces of the desired size and modelling them into the still moldable compound, you can create particularly beautiful and realistic rock formations.