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设计零件时最重要的考虑因素之一3D printingis the wall thickness. While 3D printing makes prototyping easier than ever—not only in terms of cost and speed, but also in regards to DFM (design for manufacturing), you can’t disregard DFM completely.
设计可能是（几乎）通过3D打印生产的（但是当您移动到下一个迭代或制造中的下一阶段时会发生什么？
And so enters our 3D printing wall thickness recommendations! Here are some guidelines to ensure your 3D print is, in fact, printable and structurally sound, so you can design prototypes that can be produced in quantities of 1 and then ultimately 100, or 10,000+.
墙壁厚度推荐
对于3D打印，如何设计零件功能的较薄有限。
以下是我们建议的每种材料的最小厚度以及希望危险地生活的绝对最小厚度的表格。
We有将成功的印刷部分与我们的绝对最低，但我们只能保证在我们建议的最低限度或以上成功的印刷。
Under our recommended minimum, the thinner the part, the higher the chance something goes wrong in printing. Anything below our absolute minimum is unprintable in practice.
Why There are Limitations
There are a variety of limiting factors to consider, both during and after printing.
在打印期间
3D printers print parts one layer at a time. As a result, if a feature is too thin, there’s a risk of the resin deforming or detaching, which means there isn’t sufficient material contact to connect it with the remaining body.
此外，就像您需要强大的基础以构建稳定的结构，如果打印零件并且墙壁太薄，那么该功能可能在树脂可以干燥或固化之前弯曲。结果，薄壁会扣，造成翘曲。
打印后
即使薄壁部分成功地打印，脆弱的部分仍然必须存活清洁和去除支撑材料。
清洁方法包括水射流和拾取残留物，在此阶段很多薄的部件断裂。另外，为了打印这样的薄壁，您通常需要额外的支持材料。随着清洁后的支撑材料，组件甚至更脆弱。
Minimum Wall Thickness vs Resolution
We often see some confusion around the difference between minimum wall thickness and resolution. Sometimes we’re asked, “If the resolution of a material is so high, why can’t the wall be that thin?”
Resolution comes into play in how detailed and precise a design can be, so long as there is enough thickness to provide structural support.
考虑分辨率，因为该部件的准确性可以设计用于打印，非常类似于尺寸公差。例如，采取空心球。最小壁厚决定了壳牌的薄壳是多么可打印，并且在其自身重量下不会崩溃。
分辨率决定了曲率的顺利是如何平滑的：低分辨率将显示可见的“踩平”和粗糙度，而高分辨率将隐藏这些方面。
Exceptions
Of course, there are always exceptions to the rule! Some parts can be printed with features below our recommended minimum wall thickness. Ribbing, cross supports, flat and supported components (as opposed to curved features) sometimes allow parts to be thinner.
While we aim to provide guidelines and recommendations around what we are 100% certain is printable, there are so many variables and design factors that make one thin part printable and the next one not. Because of this, we can only fully guarantee successful prints of designs above our recommended minimum wall thickness.
Main Takeaways
虽然您可能想要推动您的设计限制，但我们不建议稍微缩小我们建议的厚度。即使您的印刷成功，设计选择也可能会在路上的可制造性上运行并发症。
您的部件将如何在下一阶段生成3D打印，或许通过RTV或注塑成型? Those thin walls will likely make your part impossible to manufacture at scale.
So pay attention to the wall thickness of your parts, and if you choose to design a part thinner than our recommendations, be sure to carefully consider whether or not it will be manufacturable later on.
