Vacuum hose adapter, made to measure

Join your vacuum hose to the dust port of a saw, sander or router. Measure the opening one end pushes into and the tube the other end slides over, and we draw both ends from your figures with the clearance you pick, joined by a taper that prints without supports.

What you need before you start

What it will take

Inside diameter of the opening it pushes into: 12–100 mm
Outside diameter of the tube it slides over: 10–100 mm
How far it pushes in: 10–100 mm
How far it slides over: 10–100 mm
Nozzle size: 5 to choose from
Filament: 4 to choose from

As it comes

End that pushes in, outside as drawn31.60 mm

End that slides over, bore as drawn35.40 mm

Clearance left if the print comes out tight0.20 mm

Narrowest passage through it26.8 mm

Build plate: 41 mm as it comes, never more than 256 mm.

What you need to hand

A calliper for the two ends you are joining: the inside diameter of whichever is a hole, and the outside diameter of whichever sticks out.
How far each end can reach before the first rib or step.
Your nozzle size and the filament you will print it in.

Your hose and your tool

Measure with a calliper, in two directions at right angles. Whichever of the two is a hole, give its inside diameter; whichever sticks out, give its outside diameter.

Inside diameter of the opening it pushes into

One end of the adapter pushes into an opening — the cuff of the hose or the dust port of the tool, whichever is the hole. Measure across the inside of that opening with the jaws of a calliper, in two directions at right angles, and give the smaller figure.

Outside diameter of the tube it slides over

The other end slides over a tube — the dust port of the tool or the end of the hose, whichever sticks out. Measure across the outside of it with a calliper, in two directions at right angles, and give the larger figure.

The adapter

How far each end reaches, up to the first rib or step. How snug the fit is drawn, how steep the taper is and the wall are under Finer adjustments.

How far it pushes in

The length of the end that goes into the opening. Up to the first rib or step inside it.

How far it slides over

The length of the end that slides over the tube. Up to the first rib or step on the outside of it.

The printer it will come off

Set these to the nozzle you will print with and the filament you will use; what is filled in is only our usual setting. The nozzle decides whether the walls come out the thickness we drew. The filament does not change the model.

Nozzle size

The nozzle you will print with. It does not change the model — it decides whether the walls come out the thickness we drew.

Filament

Only a note on where each filament suits. It does not change the model.

Finer adjustments

Fit clearance

How much looser than your two figures we draw both ends, across the diameter. The smallest setting gives the snuggest fit we will send out; more goes on more easily and holds less.

Steepness of the taper

How steeply the middle section narrows from one end to the other, measured from upright. 45° is the shortest taper that prints without supports; a gentler one is longer.

Wall

The thickness of the wall, the same at both ends. Thicker is stiffer and narrows the passage through the end that pushes in.

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