> 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/first-layer-is-most-important.md).

# 第一层最重要

3D 打印的第一层可以说是最关键的，因为它为整个零件奠定了基础。如果第一层没有正确附着在打印平台上，或者挤出不均匀，后续各层依赖的稳定且一致的底座就会受到影响，从而导致打印失败。喷嘴与热床之间的间隙过大可能会造成附着不良，进而引起翘边或层移；而喷嘴过于靠近打印平台则有刮擦或损坏表面的风险，甚至可能同时毁坏平台和打印件。铺设良好的第一层可确保正确粘合和尺寸稳定性，大大提高打印成功的几率。

现代 3D 打印机在自动调平和初始 Z 高度校准等功能上取得了显著进步，这些功能大大降低了第一层出现问题的可能性，也让用户免去了手动微调的麻烦。这些自动化系统有助于在打印开始前确保喷嘴高度和热床水平处于最佳状态。然而，尽管有这些改进，仍然非常建议密切观察第一层，尤其是在尝试新材料、更换打印平台，或在维护之后重新打印时。在离开打印机无人看管之前，确认第一层打印正常仍然是防止打印失败并保护硬件的最佳做法。

{% embed url="<https://www.youtube.com/shorts/v0pvI5dYarA>" %}


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