YPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> It can be an ugly truth—just ask anyone who’s been picked last on the playground—but it can also be a source of pride; just think of all the engineering projects that are described as the largest, longest or tallest in the world. In manufacturing, large part production has historically been costly and time-consuming, but the growth of metal 3D printing (if you’ll pardon the pun) is changing that paradigm. While metal 3D printing can be broken down into various sub-types—powder bed fusion (PBF), selective laser melting (SLM), electron beam additive manufacturing (EBAM), etc.—not all of these are suitable for (or even capable of) making large parts.  “Parts that are smaller than a laptop computer are typically ideal for powder bed,” explained John O’Hara, Global Sales Manager at Sciaky, Inc. “They’re capable of making closed cavities, internal cooling channels and surfaces that are going to be useful as-deposited, but the trade-off to get that is a much lower deposition rate.” When it comes to 3D printing large metal parts, deposition rate ...