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Selective laser sintering was commercially developed in the mid 1980s in Texas, although a similar process dates to 1979. SLS prototyping is a similar manufacturing process to SLA, but SLS uses a much higher power laser to bond plastic powder together to form a 3D prototype. Typically, selective laser sintering uses Polyamide (Nylon). It is also possible to use glass-filled nylon in SLS prototyping.
Historically, SLS parts were considered more durable than SLA, but as SLA materials improve, this gap is narrowing. SLS prototyping is also considered quite wasteful, as up to 30% of all non-converted powder must be removed during the process, so as to refresh the powder stock. SLA prototyping has almost no material waste.
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