Pros / Cons
One of the processes
that SLS is often compared to is SLA. SLS is better in that it never
enounters the 'trapped volume' prolem present in SLA, and the its
self-supporting nature means that there are no rigid supports to
be hand removed from underhangs. The polymers available to SLS are
also more structurally sound than the photocuring polymers in SLA.
However, SLA offers the
advantage of higher accuracy, and smoother upper surfaces.