SLS Powder Life Study 39
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Producing acceptable models on the Selective Laser Sintering (SLS) machine involves adjusting machine parameters relative to powder age. Typically, a fraction of the powder is used and the remainder of the unused powder is recycled. After 5-7 recycles, this method leads to a powder inventory with inconsistent characteristics. The goal of this study was to apply a new recycling program to extend powder life, reduce powder inventory, and improve part quality. This study looks at various material properties of processed powder over its lifetime, including: surface quality, toughness, impact strength, elastic modulus, tensile strength, and shrinkage. A new approach to powder recycling and machine parameter adjustment will be recommended.