by printing multiple parts at once. While SLA and FDM prints can contain parts that are hollow yet fully enclosed, SLS requires hollow enclosures to have an opening for the unsintered powder within to be drained.

Affordable home SLS printers have become possible as relevant patents have started to expire, but the heating process still has stringent requirements, with a power consumption of up to 5 kW and temperatures having to be controlled within 2 °C for the three stages of preheating, melting and storing before removal.