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3D Models of Caps, Plugs and End Caps

This collection gathers STL files for caps and end caps used in everyday repairs, cable management and custom builds. You will find simple plugs, threaded covers, keycaps and decorative caps. It helps when a small original part is missing or when you want a custom fit. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

このコレクションの本文は英語で書かれています。検索自体はどの言語でも使えます。

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選定基準：Polyzon編集部 · 本文の更新日：2026年10月12日

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«3D Models of Caps, Plugs and End Caps»

The caps in this collection range from simple push-on plugs to threaded covers and keycaps. End caps for rails and tubes usually have a fixed inner diameter, while protective caps for connectors often include a cable opening or a sealing lip. Keycaps and novelty caps are more about shape and surface finish than about holding pressure or covering an opening.

When choosing a model, check the listed dimensions against the part you want to cover, including wall thickness and clearance. Look at the number of parts, how they join, and whether the author shows supports or a particular orientation. The material and slicer settings on the model page give a starting point for layer height, wall count and infill.

To narrow the search, try terms such as end cap, plug, cover, keycap, nut cap or thread protector. Related topics include cable management, bottle caps, connector covers and replacement hardware. If you need a specific fit, search by the item being capped, such as tube, rail, lug or bottle.

FAQ

よくある質問

What is the difference between a cap and an end cap?
A cap often covers an opening or connector, while an end cap usually closes the end of a tube, rail or profile. The terms overlap, so check the model dimensions and shape.
How do I choose the right inner diameter for a 3D printed cap?
Measure the outer diameter of the part you want to cover, then compare it with the model's inner diameter. Allow for the material and printer tolerance, and test a small section if the fit is critical.
Do caps need supports when printed?
It depends on the shape and orientation. Many simple caps print without supports, while caps with overhangs or internal threads may need them. Check the author's photos and notes.
Can I scale a cap model to fit a different object?
Scaling changes all dimensions, including wall thickness and thread pitch. It can work for simple covers, but threaded or snap-fit caps may not match after scaling.
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