ADDITIVE MANUFACTURING MACHINES COMPRISING FOCUSED AND UNFOCUSED ENERGY SOURCES

摘要

In some examples, an additive manufacturing machine includes an unfocused energy source to heat portions of a layer of build material as the unfocused energy source moves across the layer of build material during a build operation of a three-dimensional (3D) object. A focused energy source is controllable to selectively direct focused energy on the layer of build material during the build operation.