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This process family relies on selectively melting powdered material - commonly nylon or a range of metals - in a powder bed before relayering and repeating. This melting may be executed by a number of different energy sources, most commonly laser, electron beam, or a chemical reaction induced by a heat lamp. Powder Bed Fusion is exceptional at producing overhangs and downward facing surfaces, especially with plastic, where support structures are not needed. On the downside, the high temperatures created by the energy source introduce a high amount of heat into the part which may cause warpage or undesirable stress concentration. Parts must sometimes be oriented in counter-intuitive ways during the manufacturing step to reduce heat concentration. This means that your design might not necessarily print with Z or Y direction pointed up. Parts produced tend to be quite strong and relatively anisotropic, but with a grainy surface finish. This surface finish can be addressed through post-processing techniques such as sanding and polishing.
Nylon 12, Glass-Filled Nylon, Titanium 64, Stainless Steel 316, 15-5, 17-4, Inconel 625, 718
300-450 µin Ra
2-10 Business Days
14" x 14" x 15" (350mm x 350mm x 380mm)