This quickly cut a 22.9 cm double brick wall on each side measuring 42 cm wide and 28 cm high. Each cut took about 30 seconds and the corners were cut at right angles (no cross hairs like on a circular saw). The blades penetrate the full depth of each Wythe stone. Store-bought vacuum hose keeps brick dust to a minimum. Expensive at $1025. Making straight and perpendicular cuts depends on operator skill, the tool cuts where pressed.