ERA, clearance angle
teriku kujundusnurk – abitagatahu ja abilõikeserva tasandi vaheline nurk (vt abitagatahk, abilõikeserv; vrd taganurk), the angle formed between the minor flank and a line normal to the base of the tool; it avoids the rubbing of the workpiece against a tool (see: minor flank, end cutting edge; compare: side relief angle)
