An additive manufacturing device and method for delivering a flowable material from a nozzle of a programmable computer numeric control (CNC) machine, and compressing the flowable material with a compression roller. In one embodiment, the device includes a nozzle configured to deposit a flowable material on a surface; and a roller configured to compress the deposited flowable material, wherein the roller comprises: a flat center portion having a constant diameter; and opposed end portions, wherein each end portion extends outwardly from the flat center portion, and wherein a radially outermost surface of each end portion is angled relative a rotational axis of the roller.