Protective cap for DC 5.5×2.1/2.5 connectors
Print Profile(1)

Description
Protect your power supplies and projects from dust, moisture, and accidental shorts with this printable cap for cylindrical DC connectors. It's designed for the classic 5.5mm male plug (2.1/2.5mm tip) found on power supplies, LED strips, routers, and many other devices.
Features
- Secure pressure fit: inserts firmly and stays put without scratching.
- Rounded edge for quick insertion even at a “glance”.
- Robust yet elastic walls: designed for FDM printer tolerances.
- Minimalist, clean, and space-saving design: perfect for cables in bags or drawers.
- Cap length: 12 mm, but you can change the length to your liking with the Customize function found at the top.
- Technology: FDM
- Recommended material: TPU 95A for non-slip grip, or PLA/PETG if rigidity is preferred.
- Layer: 0.2mm
- Infill: 15
- Supports: not necessary
- Orientation: vertical, with the rounded edge facing up
Tips
- If the fit is loose, scale the model to 101–102%; if it's too tight, try 98–99%.
- TPU: increase flow to 102–105% and reduce retraction for a uniform finish.
Typical Uses
- Transporting power supplies without dirtying the central pin.
- Protection for unused connectors on hub or bench power supplies.
- Aesthetic organization for photography, audio, and maker bench setups.
Compact, functional, and printable in minutes: the small accessory that extends the life of your DC connectors.
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.




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