This paper shows the possibility of controlling the chip side-flow directio
n in water jet-assisted turning using flat-faced inserts without any chip f
ormers. The experiments were performed under orthogonal cutting conditions
of an end of a pipe with plain water jet assistance with a pressure up to 8
0 MPa and a flow up to 8 l/min. The jet was directed perpendicular to the c
utting edge into the tool/chip interface. Experimental results show that th
e chip side-curl radius can be successfully controlled. A correlation betwe
en the jet momentum, jet diameter and side-curl radius is presented and wid
ely discussed.