ABSTRACT
For achieving high porosity in built parts, the parameter combination, with which the energy density exposed to the part is minimum, is sought. That is when the hatching distance and laser speed are maximum and the laser power is minimum. If the energy given is too low, then there are two possible issues facing the production of the parts. The first issue concerns poor part strength. At low energy density some powder may not melt, leading to incomplete fusion between layers and hence low part strength.
