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Keep your ports covered! Whether it’s about dust or color coding, this simple flexible cap will, well, have you covered.

Includes the pictured product printed with TPU.

All of my products are open source! Here’s what you need to make this yourself:


Bill of Materials

This product was designed to be printed in TPU; it will not function as intended if you substitute a rigid thermoplastic.


  1. Download 3MF file.
  2. Print with solid layers (100% infill).
  3. Place on BNC port.

To see what tools and machines I use, take a look at my Workshop Setup.