UBBI - Universal Bidirectional Bowden Interconnect - an overengineered PTFE tubing connector!

A 2-way connector that uses PC4-M10 to quickly connect with other devices in the ecosystem
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updated January 28, 2025

Description

PDF

Want a quick, firm, durable connection for your PTFE lines? For quick diagnostic, quick swapping, without afflicting much damage on the PTFE itself?

Want a universal connection that can act as an extender, terminal at the same time?

Want a near air-tight connection for little to no moisture?

You came to the right place, welcome to the UBBI

An open source design, which you can integrate anywhere freely, enhancing your ptfe game!

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Features:
- Supports both PC4-M10 and ECAS04 couplers
- Allows for 3mm max internal diameter PTFE tubing
- Only 1.6mm between tube ends, suitable for bowden setups, minimal drag
- One piece fits all, no female or male ends
- Prints with minimal supports
- Twist locking mechanism with audible snap
- 14mm wrench can be used to operate the piece

NOTE:
The first 3-4 snaps must be done with a wrench, to break in the mechanism before it gets soft enough to be used by hands!

For remixers: The UBBI made for remixing into other models is included in the .step file

All UBBI versions will be forward and backward compatible, all versions will click together! Beauty of continuity!

Avoid clear ptfe, natural ptfe is opaque, clear tubing is mixed and does not slide as smooth!

Recommended print settings:
- Nozzle diameter: 0.4mm
- Layer height: ≤ 0.2mm
- Reverse on odd: disabled
- Precise walls: enabled
- Wall order: i/o/i
- Tolerance requirement: 0.1mm
- Print orientation: as imported
- Supports: included with the model, enable support generation and change to manual placement, don't add anything

Recommended materials:
 - PETG
 - ABS/ASA

Installation requires:
 - PC4-M10/ECAS04 (Remove silicone seal)
 - 4mm OD PTFE tubing
*Note: 2mm ID for bowden system, 2.5mm ID for reverse bowden


Current official UBBI items:

NameDescription
UBBIThe main connector
Drybox access portAccess ports for printing right from inside the drybox
Elegoo filament runout adapterAdapts UBBI to mount on to the filament runout sensor
UBBI frame mount(WIP)Mount UBBI anywhere on 20x20 extrusions
Reverse bowden for LSfanmodReverse bowden adapter for LSfanmod's shroud design
Reverse bowden for Neptune 4Reverse bowden adapter for any Neptune 4/Pro/Plus/Max stock shroud
Reverse bowden for Neptune 3Reverse bowden adapter for any Neptune 3/Pro/Plus/Max stock shroud
Reverse bowden for SF 3x5015Reverse bowden adapter for SF 3x5015 shroud
Optical runout sensorOptical runout sensor

Current community-made UBBI items:

NameDescription
Sunlu S2 wedgeNormal sunlu s2 wedge for more airflow, but with UBBI integrated


Changelog:
 

Official releaseChanges
v64First official release
v66Changes for attachments, removed manifold edges
v72

Tighter tolerances,

Added anti sag for one circle

Cleaned up edges where elephant's foot may get in the way

Corrected thread pitch from 1.5mm to 1mm

v82

Improved tolerances

Improved durability and strength

Corrected thread to use tapered threads

v83

2nd July 2024

Corrected thread direction

Tightened ptfe guide path

v87

19th July 2024

Added pre-made supports

Piped internal corners for cleaner corners

Chamfered edges for a softer feel on the hand

Made filament hole bigger to eliminate rubbing even with 3mm ID tubing

v90

3rd August 2024

Optimized pre-made supports

Added ECAS04 compatibility

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Model origin

The author marked this model as their own original creation.

License