In a multi-axis machine tool comprising a first slide way (2a) and a
second slide way (2b) set apart one from the other and extending parallel
along a longitudinal axis (X), a machining station (3) delimited
laterally by the slide ways (2a, 2b), a cross member (4) presenting
opposite ends (4a, 4b) each coupled to a respective slide way (2a, 2b),
and a machining head (5) mounted to the cross member (4) and positionable
over the machining station (3), at least the cross member (4) is
fashioned from a low thermal expansion material.