Hose adapter generator — custom 3D printable STL free

See inside

Connection A

End A (sits on the bed)

Measured diameter (mm)

Measure the OUTER diameter of the hose that will go into the adapter.

End length: 30 mm

End B

Measured diameter (mm)

Measure the INNER diameter of the hose or port the adapter will go into.

End length: 30 mm

Elbow angle: 0°

Transition: 20 mm

Wall: 2.4 mm

Clearance: 0.20 mm

Lead-in taper: 0.4 mm

What this tool does

Custom socket diameters and insertion fits for your hoses.

Elbows from 0° to 135° with a configurable centerline radius and continuous wall.

Male Camlock connection based on Peter H’s STEP, retaining its fixed mating profile.

Geometry calculated in your browser. Curved parts may need supports.

Camlock-derived parts download with attribution and the CC BY-NC-SA 4.0 license.

How it works

Measure both ends

Calipers work best: the inner diameter of the port the adapter goes into, or the outer diameter of the hose that goes into it.

Set the shape

Choose sockets, angle and bend radius. In Camlock mode, socket A keeps the original mating dimensions.

Inspect and print

Download the part and check orientation, supports and fit in your slicer. Print a fit test before making several.

Frequently asked questions

How do I measure the diameter correctly?

With a calliper, measuring at the mouth of the part rather than partway along the tube. The rule is direct: if the adapter is going to go INSIDE the hose, what matters is the hose INTERNAL diameter; if the hose goes inside the adapter, what matters is its EXTERNAL diameter. Confusing those two is the most common mistake and produces a part that misses by several millimetres. When in doubt, measure at two positions ninety degrees apart and average, because corrugated hose is rarely perfectly round and tends to go oval after time spent coiled up. The ilove3d hose adapter generator asks for the diameter and the fit mode separately precisely so that decision is explicit rather than left to guessing which of the two numbers you meant. Writing both numbers down before opening the generator saves going back to the workshop halfway through, which is how most of these get measured twice.

What clearance should I use?

0.2 mm is the sensible starting point for a well-calibrated FDM printer: it gives a firm press fit that goes in and stays. If your printer over-extrudes slightly, or if you tried it and the part simply will not go in, raise it to 0.3 or 0.4 mm. And if you want a sliding fit that connects and disconnects without effort — the usual case when the adapter moves between tools regularly — the range is 0.4 to 0.5 mm. It is worth printing a short test ring before the whole part: ten minutes against an hour. The ilove3d hose adapter generator also adds a lead-in taper on the mating surface, which helps thread the two parts together without a fight and compensates a little if the clearance came out tight. Note down whichever clearance worked on your printer: it is a number specific to each machine and it serves every fitted part you make afterwards.

Does it work for shop vac dust collection?

It is the most common use for this tool: connecting a workshop vacuum to a sander, a circular saw or a CNC whose ports never match each other. Every manufacturer uses its own diameter and there is no real standard, so you end up with a drawer full of adapters that fit nothing. The diameters that come up most often are around 32, 35, 38, 50 and 58 mm, but the firm recommendation is measuring your own with a calliper rather than trusting the manufacturer nominal figure, which very often does not match the actual part. The ilove3d hose adapter generator lets you enter any diameter within range, so you do not depend on your particular combination existing in some catalogue of ready-made parts. If the port on your tool is oval rather than round, measure the minor axis, since that is the dimension that decides whether the part goes on at all.

What material and print settings?

Choose material and settings for the part’s temperature and use. Check wall thickness, perimeters and orientation in your slicer: an elbow may need supports even when a straight adapter does not. Verify the fit with a test print.

Is it airtight?

With three or more perimeters and a 2.4 mm wall the body is airtight for vacuuming and dust extraction, which is what it is designed for. The key is the perimeters rather than the infill: the walls are what form a continuous barrier, and with fewer than three there is always some path between extrusions. For pressurised liquids the part is not intended, and that is worth saying plainly: an FDM-printed joint has microscopic gaps between layers that pressurised water finds sooner or later. If you are going to try anyway, add an O-ring or PTFE tape on the mating surface, and choose a material that tolerates the liquid temperature, which for hot water rules PLA out entirely. For low-pressure watering it does work well, which is the other frequent use after workshop dust extraction.

What if both diameters are almost the same?

It works just the same and the result is a coupling sleeve, which is a perfectly useful part. The sensible configuration is a short transition, 5 to 10 mm, since there is no diameter difference to bridge, and a different fit mode on each mouth: one that receives and one that inserts, or both receiving if you are joining two hose ends. With that, the ilove3d hose adapter generator produces a coupler for splicing two lengths of the same cut hose, which is a fairly common repair and one where the commercial part usually costs more than it ought to. It also works as a rigid extension when you need the port to reach a little further. It is still worth leaving a minimal transition rather than none: an abrupt diameter change concentrates stress exactly where the part gets handled.

How do I customize the shape?

Set the sockets and choose an angle from 0° to 135°. The centerline radius controls the bend; if it is too small, the generator increases it to keep the inner passage open. In Camlock mode, socket A’s controls are replaced by the fixed original profile. Socket B remains configurable.

Question of the month

Which printer do you use?

Custom hose adapter

What this tool does

How it works

Measure both ends

Set the shape

Inspect and print