uniTube

The Universal Tube Library for OpenSCAD: describe a tube’s centreline, give it a cross-section, and join several into branching networks whose bores stay open.

use <uniTube/src/uniTube.scad>;

// waypoints and fillet radii
ut_tube(ut_polyline([[0,0,0], [50,0,0], [50,50,0]], r = 15),
        ut_round(od = 12, wall = 2));

It has no dependencies and needs OpenSCAD 2021.01, the version it is tested on (#38).

What it is for

General sweep libraries move a solid outline along a curve. A tube needs more:

• a bore that survives every union in the model,
• several ways to describe a path — waypoints with fillet radii, a bender program, a formula, or arcs and lines — that all behave the same downstream,
• branching networks where hollow runs meet without sealing each other,
• ports as data, so fittings can be a separate library.

Where to go

Getting started	Install, a first tube, looking inside.
Usage	Paths, profiles, frames, networks.
Examples	Twelve runnable models.
Reference	Every function, and every error code.
Developer	Verification, design decisions, history.

Status

v0.1.0. The geometry is verified, but the API has not yet been used by anything outside the repository, so names and argument shapes may still move.

Not shipped, deliberately: terminations (a separate library), junction fillets, profile variation along a path, and multi-lumen sections. Open work is in GitHub issues.