Yes if the sand is on the clay it can roll even if the sand was not on the clay.The clay can still roll.
Roll out your clay until it is easy to work with. roll it into a ball. stick your finger into the ball, making an indention. pinch the clay from the inside around the edges.
swamp+sand=clay
Probably concrete, but hard packed sand would do pretty well.
mud+sand=clay
Clay is soft and sand is like sand water
Swamp + sand = clay it is really... Mud+sand = clay
sand because, sand ranges in size from .2 cm in diameter to .006 cm in diameter and clay's largest diameter is .0004 cm in diameter.
Clay is introduced to the sand for the sand to help mantain its shape when forming. and it make the mould hard and to retain the casting the clay is tow types one is active clay and dead clay
sand,clay,slit
Water + stone = sand Sand + swamp = clay
clay
molding sand contains 8-12 % of clay.