Square tubing finishing plug

keep out the elements



A free software license that requires that all work based on this must also be free software as in freely remixable and sharable by anyone under the same license but may be used commercially.

Learn more or download attribution tags


The initial design for this part comes from a 2" Black LDPE FP-321 Square Tubing Finishing Plug manufactured by Caplugs. I could have just bought one from Fastenal for $0.39 USD (https://www.fastenal.com/products/details/11130986), but wanted to improve my modeling skills so I 3D printed it. Design is multi-use and fully parametric.

Newer versions of this model (and source code) may be available here: https://github.com/nickthetait/3D-printable-models/

Materials and methods

- Layer height: <= 0.2mm
- Material:
- Mostly rigid with just a little bit of flex
- Completely watertight such as Bridge Nylon from Taulman https://taulman3d.com/bridge-nylon.html
- Dyed black using some Rit All-Purpose Powder Dye https://www.ritdye.com/color-library/core-colors/
- Adhesion: due to the parts small size any lifting can be countered by enabling brim



Issues are used to track todos, bugs or requests. To get started, you could create an issue.


C6bb61fe38c9e9027d707b0d0dccae45?default=blank&size=40BGham added this to the Interesting collection ago
Mini 2017 roundNick Tait published this design ago