The best results when fixing walls from all kinds of hollow bricks can be obtained by spreading the mortar with a special box. It is placed on top of the previously built layer of hollow bricks. The chest has the frames extended downwards, thanks to which it can be evenly moved along the wall. After throwing the mortar inside, crates move along. The rear wall of the box has a cutout of various shapes and sizes at the bottom, which causes the mortar to be spread in even stripes.
