> For the complete documentation index, see [llms.txt](https://wiki.polymaker.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.polymaker.com/polymaker-wiki/polymaker-wiki-zh/ji-chu-zhi-shi/fun-3d-printing-facts/print-orientation-affects-strength.md).

# 打印方向会影响强度

在构建板上放置打印件时，通常的做法是优先考虑诸如获得最佳悬垂质量以及尽量减少所需支撑材料等因素。虽然这些考虑对打印质量和效率很重要，但在决定打印朝向时，它们并不是唯一需要注意的元素。一个常常被忽视的关键因素是打印部件的机械强度，而这本质上会受到 3D 打印逐层成形特性的影响。

由于 3D 打印是通过层层堆叠材料制成的，部件通常在 Z 轴方向上——也就是垂直于层面的方向——机械强度最弱，因此更容易沿着这些层线断裂或分层。结果是，如果你打印的部件必须承受机械应力或结构载荷，那么在打印期间以及设计阶段都必须仔细考虑其朝向。通过将打印件调整到使最大应力沿 X 轴或 Y 轴方向（与层线平行），你可以显著提高部件的耐久性和性能。从一开始就把打印朝向考虑进去，有助于确保最终物体同时满足功能和强度要求。

{% embed url="<https://www.youtube.com/shorts/ddZZzHDzjUc>" %}


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