About the hose adapter
How to measure
Use calipers on both parts you’re joining. For a hose or tube, measure the outer diameter where it will slide over something, or the inner diameter where something will slide into it — the tool matches this with the “Outer” / “Inner” fit switch on each side.
Measure in millimetres. If you only have inches, multiply by 25.4.
Print settings
- Orientation: print with the larger end down, so the taper prints without an overhang start.
- Walls: at least 3 perimeters (line-width dependent) so the part holds pressure without leaking.
- Supports: only needed if the transition is steeper than 60° from vertical — the tool warns you and asks you to confirm before it lets you export a shape that steep.
- Infill: 100% isn’t necessary; 15–20% is plenty since the walls carry the load.
FAQ
Will this actually seal? A well-fit adapter (right tolerance for your printer, three or more walls) holds a friction fit well. For a pressurized or submerged joint, a wrap of PTFE tape or a hose clamp over the joint adds margin.
My printer runs tight — parts don’t fit. Raise the tolerance value a little (0.1–0.2 mm steps) and reprint.
Can I get an exact CAD file, not just STL? Yes — press STEP in the export panel. You get true cylinders, cones and, for angled adapters, a torus — an editable solid in millimetres for Fusion 360, FreeCAD or Onshape, not a mesh. The first STEP download loads a one-time CAD engine (about 5 MB), so it takes a moment; later ones are quick, and nothing is downloaded until you press the button.