... in Texas, although a similar process dates to 1979. SLS prototyping is a similar manufacturing process to SLA, but SLS uses ... a 3D prototype. Typically, selective laser sintering uses Polyamide (Nylon). It is also possible to use glass-filled nylon in SLS prototyping ... the process, so as to refresh the powder stock. SLA prototyping has almost no material waste. Imported machines http://www.cn ...