Inline tube adapter 3D models
First model: 2025-06-16
Number of 3D models generated: 1827
Category: technical parts
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(model #3668)
Photos of various 3D printed models
This template generates tube adapters, with one inlet and one outlet (each of which can be considered either male or female).
Both tube ends are customizable. It is possible to offset the two connectors. Likewise, each end can feature a thread on the outside, inside, both, or none.
Internal fillets are always integrated into the adapter to optimize the flow through the transition zone.
Note that a clearance is always required: a tube with an outer diameter of 50 mm will not fit into a tube with an inner diameter of 50 mm (even more so with 3D printing).
Strictly speaking, this template can also be used to create custom funnels, such as model #1342.
Find more information about this template in the article A new template for inline tube adapters! .
Keywords: tube adapter, fitting, reducer, connector, coupling, sleeve, straight adapter, diameter adapter, pipe adapter, tube junction, inline fitting
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Additional information
The transition refers to the connection interface between the two tubes. It defines the total length of the adapter, which is equal to the sum of the tube lengths plus the length of the transition.
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2025-07-19 (last model before revision: #1215) :
#1 side A length : decimal places has been updated to integer
#2 side A diameter : decimal places has been updated to integer
#4 side B length : decimal places has been updated to integer
#5 side B diameter : decimal places has been updated to integer
#7 transition length : decimal places has been updated to integer
Illustration of the parameters
Categories
The latest online-generated models
Tube adapter STL 3D file ⌀ 49–25 mm (Length: 31 mm) (📦 #12664)
1 object(s) - format STL
Diameter adapter ⌀49 mm to ⌀25 mm in STL format. Length of this adapter is 31 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 5 mm, the smaller one of 20 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 5 | mm |
| side A outer diameter | 49 | mm |
| side A thickness | 2 | mm |
| side B length | 20 | mm |
| side B outer diameter | 25 | mm |
| side B thickness | 2 | mm |
| transition length | 6 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 39–30 mm (Length: 65 mm) (📦 #12663)
1 object(s) - format STL
Tube connector ⌀39 mm to ⌀30 mm in STL format. Length of this coupler is 65 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 25 mm as well. The ends have a fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 39 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 30 | mm |
| side B thickness | 2 | mm |
| transition length | 15 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL 3D file ⌀ 50–45 mm (Length: 35 mm) (📦 #12660)
1 object(s) - format STL
Inline tube junction ⌀50 mm to ⌀45 mm in STL format. Total length of this reducer is 35 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 5 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 50 | mm |
| side A thickness | 2 | mm |
| side B length | 5 | mm |
| side B outer diameter | 45 | mm |
| side B thickness | 2 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 50–45 mm (Length: 40 mm) (📦 #12659)
1 object(s) - format STL
Inline fitting ⌀50 mm to ⌀45 mm in STL 3D format. Final length of this sleeve is 40 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 10 mm. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 50 | mm |
| side A thickness | 2 | mm |
| side B length | 10 | mm |
| side B outer diameter | 45 | mm |
| side B thickness | 2 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL 3D file ⌀ 50–48 mm (Length: 45 mm) (📦 #12658)
1 object(s) - format STL
Tube fitting ⌀50 mm to ⌀48 mm in STL format. Length of this connector is 45 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 10 mm, the smaller one of 25 mm. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 10 | mm |
| side A outer diameter | 50 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 48 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL 3D file ⌀ 50–39 mm (Length: 55 mm) (📦 #12656)
1 object(s) - format STL
Inline tube coupler ⌀50 mm to ⌀39 mm in STL format. Total length of this adapter is 55 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 25 mm. The ends are rounded on the outside to facilitate the connection of the two tubes.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 50 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 39 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on th... |
Tubing adapter STL 3D file ⌀ 57–51 mm (Length: 55 mm) (📦 #12641)
1 object(s) - format STL
Inline sleeve ⌀57 mm to ⌀51 mm in STL format. Total length of this reducer is 55 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 30 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 57 | mm |
| side A thickness | 3 | mm |
| side B length | 30 | mm |
| side B outer diameter | 51 | mm |
| side B thickness | 3 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL 3D file ⌀ 83–50 mm (Length: 100 mm) (📦 #12640)
1 object(s) - format STL
Tube reducer ⌀83 mm to ⌀50 mm in STL format. Total length of this junction is 100 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 83 | mm |
| side A thickness | 3 | mm |
| side B length | 20 | mm |
| side B outer diameter | 50 | mm |
| side B thickness | 3 | mm |
| transition length | 60 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL 3D file ⌀ 36–20 mm (Length: 46 mm) (📦 #12636)
1 object(s) - format STL
Straight tube coupler ⌀36 mm to ⌀20 mm in STL format. Length of this coupler is 46 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 18 mm. The axes of the tubes are offset by 7.9 mm. The ends are rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 36 | mm |
| side A thickness | 2 | mm |
| side B length | 18 | mm |
| side B outer diameter | 20 | mm |
| side B thickness | 2 | mm |
| transition length | 8 | mm |
| axis offset | 7.9 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL file ⌀ 24–20 mm (Length: 36 mm) (📦 #12635)
1 object(s) - format STL
Inline sleeve ⌀24 mm to ⌀20 mm in STL 3D format. Final length of this reducer is 36 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 15 mm, the smaller one of 15 mm as well. The two axes of the tubes are offset by 1.9 mm. The ends are rounded to ease the connection.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 15 | mm |
| side A outer diameter | 24 | mm |
| side A thickness | 2 | mm |
| side B length | 15 | mm |
| side B outer diameter | 20 | mm |
| side B thickness | 2 | mm |
| transition length | 6 | mm |
| axis offset | 1.9 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL file ⌀ 29–20 mm (Length: 38 mm) (📦 #12633)
1 object(s) - format STL
Tube adapter ⌀29 mm to ⌀20 mm in STL format. Final length of this coupler is 38 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 15 mm, the smaller one of 15 mm as well. The axes of the tubes are offset by 4 mm. The ends have a fillet to facilitate the connection of the two tubes.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 15 | mm |
| side A outer diameter | 29 | mm |
| side A thickness | 2 | mm |
| side B length | 15 | mm |
| side B outer diameter | 20 | mm |
| side B thickness | 2 | mm |
| transition length | 8 | mm |
| axis offset | 4 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL 3D file ⌀ 29–20 mm (Length: 38 mm) (📦 #12632)
1 object(s) - format STL
Inline tube junction ⌀29 mm to ⌀20 mm in STL 3D format. Total length of this coupler is 38 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 15 mm, the smaller one of 15 mm as well. The axes of the tubes are offset by 2 mm. The ends feature a fillet to make tube connection easier.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 15 | mm |
| side A outer diameter | 29 | mm |
| side A thickness | 2 | mm |
| side B length | 15 | mm |
| side B outer diameter | 20 | mm |
| side B thickness | 2 | mm |
| transition length | 8 | mm |
| axis offset | 2 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL 3D file ⌀ 49–30 mm (Length: 80 mm) (📦 #12631)
1 object(s) - format STL
Inline tubing adapter ⌀49 mm to ⌀30 mm in STL format. Total length of this sleeve is 80 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 35 mm, the smaller one of 35 mm as well. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 35 | mm |
| side A outer diameter | 49 | mm |
| side A thickness | 2 | mm |
| side B length | 35 | mm |
| side B outer diameter | 30 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL file ⌀ 48–47 mm (Length: 77 mm) (📦 #12620)
1 object(s) - format STL
Tube fitting ⌀48 mm to ⌀47 mm in STL format. Final length of this sleeve is 77 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 17 mm. The ends have a fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 40 | mm |
| side A outer diameter | 48 | mm |
| side A thickness | 2 | mm |
| side B length | 17 | mm |
| side B outer diameter | 47 | mm |
| side B thickness | 2 | mm |
| transition length | 20 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL file ⌀ 29–24 mm (Length: 45 mm) (📦 #12612)
1 object(s) - format STL
Straight tubing adapter ⌀29 mm to ⌀24 mm in STL 3D format. Final length of this sleeve is 45 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 29 | mm |
| side A thickness | 2 | mm |
| side B length | 20 | mm |
| side B outer diameter | 24 | mm |
| side B thickness | 2 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL file ⌀ 100–70 mm (Length: 69 mm) (📦 #12589)
1 object(s) - format STL
Inline tube reducer ⌀100 mm to ⌀70 mm in STL 3D format. Final length of this adapter is 69 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 30 mm as well. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 100 | mm |
| side A thickness | 2 | mm |
| side B length | 30 | mm |
| side B outer diameter | 70 | mm |
| side B thickness | 2 | mm |
| transition length | 9 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL 3D file ⌀ 31–24 mm (Length: 90 mm) (📦 #12588)
1 object(s) - format STL
Inline tube reducer ⌀31 mm to ⌀24 mm in STL 3D format. Total length of this junction is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 25 mm as well. The ends are rounded to ease the connection.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 31 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 24 | mm |
| side B thickness | 2 | mm |
| transition length | 40 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL 3D file ⌀ 30–22 mm (Length: 90 mm) (📦 #12583)
1 object(s) - format STL
Tube adapter ⌀30 mm to ⌀22 mm in STL format. Length of this sleeve is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 25 mm as well. The ends are rounded to make tube connection easier.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 30 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 22 | mm |
| side B thickness | 2 | mm |
| transition length | 40 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL 3D file ⌀ 32–26 mm (Length: 60 mm) (📦 #12580)
1 object(s) - format STL
Straight tube reducer ⌀32 mm to ⌀26 mm in STL format. Final length of this adapter is 60 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 32 | mm |
| side A thickness | 2 | mm |
| side B length | 20 | mm |
| side B outer diameter | 26 | mm |
| side B thickness | 2 | mm |
| transition length | 20 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 32–24 mm (Length: 90 mm) (📦 #12579)
1 object(s) - format STL
Straight tubing adapter ⌀32 mm to ⌀24 mm in STL format. Length of this sleeve is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 25 mm as well. The ends are rounded to make tube connection easier.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 32 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 24 | mm |
| side B thickness | 2 | mm |
| transition length | 40 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL 3D file ⌀ 59–50 mm (Length: 45 mm) (📦 #12562)
1 object(s) - format STL
Straight tubing adapter ⌀59 mm to ⌀50 mm in STL format. Total length of this connector is 45 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 59 | mm |
| side A thickness | 3 | mm |
| side B length | 20 | mm |
| side B outer diameter | 50 | mm |
| side B thickness | 3 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL 3D file ⌀ 21–12 mm (Length: 220 mm) (📦 #12541)
1 object(s) - format STL
Straight tube fitting ⌀21 mm to ⌀12 mm in STL 3D format. Final length of this sleeve is 220 mm. The larger-diameter tube has a thickness of 2 mm and a sleeve length of 20 mm. The smaller-diameter tube has a thickness of 4 mm and a length of 150 mm. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 21 | mm |
| side A thickness | 2 | mm |
| side B length | 150 | mm |
| side B outer diameter | 12 | mm |
| side B thickness | 4 | mm |
| transition length | 50 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL file ⌀ 37–30 mm (Length: 65 mm) (📦 #12538)
1 object(s) - format STL
Inline tubing adapter ⌀37 mm to ⌀30 mm in STL format. Total length of this reducer is 65 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 25 mm as well. The ends feature a fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 37 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 30 | mm |
| side B thickness | 2 | mm |
| transition length | 15 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL 3D file ⌀ 181–125 mm (Length: 70 mm) (📦 #12529)
1 object(s) - format STL
Inline tube reducer ⌀181 mm to ⌀125 mm in STL 3D format. Total length of this adapter is 70 mm. The larger-diameter tube has a thickness of 3 mm and a sleeve length of 20 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 40 mm. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 181 | mm |
| side A thickness | 3 | mm |
| side B length | 40 | mm |
| side B outer diameter | 125 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 182–125 mm (Length: 55 mm) (📦 #12527)
1 object(s) - format STL
Tube fitting ⌀182 mm to ⌀125 mm in STL 3D format. Final length of this junction is 55 mm. The larger-diameter tube has a thickness of 3 mm and a length of 10 mm. The smaller-diameter tube has a thickness of 20 mm and a length of 40 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 10 | mm |
| side A outer diameter | 182 | mm |
| side A thickness | 3 | mm |
| side B length | 40 | mm |
| side B outer diameter | 125 | mm |
| side B thickness | 20 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL 3D file ⌀ 24–20 mm (Length: 29 mm) (📦 #12509)
1 object(s) - format STL
Diameter adapter ⌀24 mm to ⌀20 mm in STL 3D format. Total length of this adapter is 29 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 12 mm, the smaller one of 12 mm as well. The two axes of the tubes are off-center by 1 mm. The ends are rounded to make tube connection easier.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 12 | mm |
| side A outer diameter | 24 | mm |
| side A thickness | 2 | mm |
| side B length | 12 | mm |
| side B outer diameter | 20 | mm |
| side B thickness | 2 | mm |
| transition length | 5 | mm |
| axis offset | 1 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL 3D file ⌀ 55–50 mm (Length: 55 mm) (📦 #12508)
1 object(s) - format STL
Inline tubing adapter ⌀55 mm to ⌀50 mm in STL format. Final length of this sleeve is 55 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 25 mm as well. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 55 | mm |
| side A thickness | 2 | mm |
| side B length | 25 | mm |
| side B outer diameter | 50 | mm |
| side B thickness | 2 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 59–50 mm (Length: 90 mm) (📦 #12503)
1 object(s) - format STL
Tube adapter ⌀59 mm to ⌀50 mm in STL 3D format. Final length of this connector is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 59 | mm |
| side A thickness | 2 | mm |
| side B length | 30 | mm |
| side B outer diameter | 50 | mm |
| side B thickness | 2 | mm |
| transition length | 30 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 107–76 mm (Length: 55 mm) (📦 #12502)
1 object(s) - format STL
Tube adapter ⌀107 mm to ⌀76 mm in STL 3D format. Length of this coupler is 55 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 15 mm, the smaller one of 15 mm as well. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 15 | mm |
| side A outer diameter | 107 | mm |
| side A thickness | 3 | mm |
| side B length | 15 | mm |
| side B outer diameter | 76 | mm |
| side B thickness | 3 | mm |
| transition length | 25 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL 3D file ⌀ 58–50 mm (Length: 90 mm) (📦 #12501)
1 object(s) - format STL
Tube junction ⌀58 mm to ⌀50 mm in STL 3D format. Total length of this coupler is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 30 mm as well. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 58 | mm |
| side A thickness | 2 | mm |
| side B length | 30 | mm |
| side B outer diameter | 50 | mm |
| side B thickness | 2 | mm |
| transition length | 30 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Connect two pipes of different diameters
Custom inline tube adapters are designed to connect two pipes of different diameters or slightly offset axes, depending on the assembly needs. They are suitable for both liquid and air transfer in ventilation or exhaust systems. These 3D-printable parts are useful in workshops, laboratories, craft setups, or home repairs. Their precise geometry ensures a clean and leak-free connection, without glue or excessive tightening, for a practical and durable result.
Depending on the project, several models can be selected. A large reduction adapter connects two tubes with very different sizes while maintaining good mechanical strength. When an offset is required, an offset adapter provides precise alignment between two non-collinear pipes. Conversely, for nearly identical diameters, a small reduction adapter ensures a smooth transition and stable fit without tube deformation.
Each parametric model is fully configurable — sleeve length, wall thickness, inlet and outlet diameters, or rounded edges to ease fitting. Thanks to this customization, inline tube adapters offer a versatile and cost-effective solution for any assembly requiring a precise, 3D-printable connector. Whether for technical use, prototyping, or practical projects, these custom parts easily integrate into all kinds of light piping systems.