核心的瓶颈首先在于精度问题。目前技术虽然在不断进步，但在打印精细结构或大尺寸零件时，依然难以达到高精度装配所需的公差要求及优秀的表面质量要求，这直接导致了打印件难以直接作为最终功能部件使用。
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One of the most counterintuitive, for the maximalist human psyche we have, is to know the role and place your software fits in and to decide when what you want to do next fits with, what you nowadays call the “product vision”, or if it’s just another project, another tool.