Turn one sponge upside down so the flat surface is facing upwards.

The massive trunks of the gum trees were painted right up on top of the flat surface.

Place on a flat surface to cool and harden.

Now almost at his foot he noticed the weathered flat surface of a scapula, broken off below the shoulder joint.

This oven mitt has a suction pad that sticks to the oven door or any flat surface, so it's always to hand.