Inline tube adapter 3D models
First model: 2025-06-16
Number of 3D models generated: 353
Category: technical parts
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(model #2189)
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
Latest models generated
Tube adapter STL 3D file ⌀ 45–44 mm (Length: 70 mm) (📦 #3011)
1 object(s) - format STL
Straight sleeve ⌀45 mm to ⌀44 mm in STL 3D format. Total length of this adapter is 70 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 40 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 45 | mm |
| side A thickness | 2 | mm |
| side B length | 40 | mm |
| side B outer diameter | 44 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL 3D file ⌀ 40–20 mm (Length: 110 mm) (📦 #3010)
1 object(s) - format STL
Inline fitting ⌀40 mm to ⌀20 mm in STL format. Final length of this reducer is 110 mm. The larger-diameter tube has a thickness of 2 mm and a length of 40 mm. The smaller-diameter tube has a thickness of 2.2 mm and a length of 40 mm as well. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 40 | mm |
| side A outer diameter | 40 | mm |
| side A thickness | 2 | mm |
| side B length | 40 | mm |
| side B outer diameter | 20 | mm |
| side B thickness | 2.2 | mm |
| transition length | 30 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL file ⌀ 40–24 mm (Length: 110 mm) (📦 #3009)
1 object(s) - format STL
Straight tube adapter ⌀40 mm to ⌀24 mm in STL 3D format. Total length of this adapter is 110 mm. The thickness of the tubes is identical: 2.1 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 40 | mm |
| side A outer diameter | 40 | mm |
| side A thickness | 2.1 | mm |
| side B length | 40 | mm |
| side B outer diameter | 24 | mm |
| side B thickness | 2.1 | mm |
| transition length | 30 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL file ⌀ 44–24 mm (Length: 110 mm) (📦 #3008)
1 object(s) - format STL
Inline tube coupler ⌀44 mm to ⌀24 mm in STL 3D format. Total length of this fitting is 110 mm. The thickness of the tubes is identical: 2.1 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 40 mm as well. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 40 | mm |
| side A outer diameter | 44 | mm |
| side A thickness | 2.1 | mm |
| side B length | 40 | mm |
| side B outer diameter | 24 | mm |
| side B thickness | 2.1 | mm |
| transition length | 30 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL file ⌀ 58–50 mm (Length: 100 mm) (📦 #3005)
1 object(s) - format STL
Straight tube reducer ⌀58 mm to ⌀50 mm in STL format. Total length of this fitting is 100 mm. The larger-diameter tube has a thickness of 4 mm and a length of 45 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 40 mm. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 45 | mm |
| side A outer diameter | 58 | mm |
| side A thickness | 4 | mm |
| side B length | 40 | mm |
| side B outer diameter | 50 | mm |
| side B thickness | 3 | mm |
| transition length | 15 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL 3D file ⌀ 85–54 mm (Length: 120 mm) (📦 #3001)
1 object(s) - format STL
Tube connector ⌀85 mm to ⌀54 mm in STL format. Total length of this junction is 120 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 60 mm, the smaller one of 55 mm. The axes of the tubes are offset by 5 mm. The ends have a fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 60 | mm |
| side A outer diameter | 85 | mm |
| side A thickness | 3 | mm |
| side B length | 55 | mm |
| side B outer diameter | 54 | mm |
| side B thickness | 3 | mm |
| transition length | 5 | mm |
| axis offset | 5 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL file ⌀ 60–35 mm (Length: 240 mm) (📦 #2996)
1 object(s) - format STL
Straight tube fitting ⌀60 mm to ⌀35 mm in STL 3D format. Length of this adapter is 240 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 80 mm, the smaller one of 80 mm as well. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 80 | mm |
| side A outer diameter | 60 | mm |
| side A thickness | 3 | mm |
| side B length | 80 | mm |
| side B outer diameter | 35 | mm |
| side B thickness | 3 | mm |
| transition length | 80 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL 3D file ⌀ 60–51 mm (Length: 55 mm) (📦 #2994)
1 object(s) - format STL
Straight sleeve ⌀60 mm to ⌀51 mm in STL format. Final length of this sleeve is 55 mm. The thickness of the tubes is identical: 2.5 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 | 60 | mm |
| side A thickness | 2.5 | mm |
| side B length | 25 | mm |
| side B outer diameter | 51 | mm |
| side B thickness | 2.5 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL 3D file ⌀ 60–49 mm (Length: 55 mm) (📦 #2988)
1 object(s) - format STL
Inline sleeve ⌀60 mm to ⌀49 mm in STL 3D format. Final length of this coupler is 55 mm. The thickness of the tubes is identical: 2.5 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 25 mm as well. The ends are rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 25 | mm |
| side A outer diameter | 60 | mm |
| side A thickness | 2.5 | mm |
| side B length | 25 | mm |
| side B outer diameter | 49 | mm |
| side B thickness | 2.5 | mm |
| transition length | 5 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL file ⌀ 53–35 mm (Length: 100 mm) (📦 #2985)
1 object(s) - format STL
Straight tube fitting ⌀53 mm to ⌀35 mm in STL 3D format. Length of this adapter is 100 mm. The larger-diameter tube has a thickness of 4 mm and a length of 45 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 40 mm. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 45 | mm |
| side A outer diameter | 53 | mm |
| side A thickness | 4 | mm |
| side B length | 40 | mm |
| side B outer diameter | 35 | mm |
| side B thickness | 3 | mm |
| transition length | 15 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL file ⌀ 58–49 mm (Length: 100 mm) (📦 #2984)
1 object(s) - format STL
Tubing reducer ⌀58 mm to ⌀49 mm in STL format. Length of this junction is 100 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 45 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 40 mm. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 45 | mm |
| side A outer diameter | 58 | mm |
| side A thickness | 4 | mm |
| side B length | 40 | mm |
| side B outer diameter | 49 | mm |
| side B thickness | 3 | mm |
| transition length | 15 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 64–32 mm (Length: 166 mm) (📦 #2979)
1 object(s) - format STL
Inline tubing adapter ⌀64 mm to ⌀32 mm in STL 3D format. Total length of this junction is 166 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 80 mm, the smaller one of 60 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 80 | mm |
| side A outer diameter | 64 | mm |
| side A thickness | 3 | mm |
| side B length | 60 | mm |
| side B outer diameter | 32 | mm |
| side B thickness | 3 | mm |
| transition length | 26 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tubing adapter STL 3D file ⌀ 50–40 mm (Length: 108 mm) (📦 #2978)
1 object(s) - format STL
Straight tube reducer ⌀50 mm to ⌀40 mm in STL 3D format. Total length of this coupler is 108 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 60 mm. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 50 | mm |
| side A thickness | 5 | mm |
| side B length | 60 | mm |
| side B outer diameter | 40 | mm |
| side B thickness | 5 | mm |
| transition length | 18 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 53–45 mm (Length: 100 mm) (📦 #2971)
1 object(s) - format STL
Straight tube fitting ⌀53 mm to ⌀45 mm in STL 3D format. Final length of this reducer is 100 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 45 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 40 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 45 | mm |
| side A outer diameter | 53 | mm |
| side A thickness | 4 | mm |
| side B length | 40 | mm |
| side B outer diameter | 45 | mm |
| side B thickness | 3 | mm |
| transition length | 15 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 58–45 mm (Length: 100 mm) (📦 #2970)
1 object(s) - format STL
Tubing reducer ⌀58 mm to ⌀45 mm in STL format. Total length of this junction is 100 mm. The larger-diameter tube has a thickness of 4 mm and a length of 45 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 40 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 45 | mm |
| side A outer diameter | 58 | mm |
| side A thickness | 4 | mm |
| side B length | 40 | mm |
| side B outer diameter | 45 | mm |
| side B thickness | 3 | mm |
| transition length | 15 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL 3D file ⌀ 200–80 mm (Length: 80 mm) (📦 #2966)
1 object(s) - format STL
Tube adapter ⌀200 mm to ⌀80 mm in STL format. Final length of this connector is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The axes of the tubes are off-center by 50 mm. The ends are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 200 | mm |
| side A thickness | 3 | mm |
| side B length | 30 | mm |
| side B outer diameter | 80 | mm |
| side B thickness | 3 | mm |
| transition length | 20 | mm |
| axis offset | 50 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 225–80 mm (Length: 45 mm) (📦 #2952)
1 object(s) - format STL
Inline tube junction ⌀225 mm to ⌀80 mm in STL 3D format. Final length of this fitting is 45 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 20 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 20 mm as well. The axes of the tubes are offset by 1 mm. The ends have a fillet on the outside.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 225 | mm |
| side A thickness | 4 | mm |
| side B length | 20 | mm |
| side B outer diameter | 80 | mm |
| side B thickness | 3 | mm |
| transition length | 5 | mm |
| axis offset | 1 | mm |
| ends fillet | fillet on th... |
Tubing adapter STL 3D file ⌀ 107–80 mm (Length: 70 mm) (📦 #2919)
1 object(s) - format STL
Tubing reducer ⌀107 mm to ⌀80 mm in STL format. Length of this connector is 70 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 are raw.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 107 | mm |
| side A thickness | 2 | mm |
| side B length | 30 | mm |
| side B outer diameter | 80 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL 3D file ⌀ 105–101 mm (Length: 95 mm) (📦 #2917)
1 object(s) - format STL
Inline fitting ⌀105 mm to ⌀101 mm in STL format. Final length of this coupler is 95 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve 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 | 105 | mm |
| side A thickness | 2 | mm |
| side B length | 35 | mm |
| side B outer diameter | 101 | mm |
| side B thickness | 2 | mm |
| transition length | 25 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 20–7 mm (Length: 26 mm) (📦 #2906)
1 object(s) - format STL
Tube reducer ⌀20 mm to ⌀7 mm in STL format. Total length of this adapter is 26 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 8 mm, the smaller one of 8 mm as well. The ends are rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 8 | mm |
| side A outer diameter | 20 | mm |
| side A thickness | 2 | mm |
| side B length | 8 | mm |
| side B outer diameter | 7 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL 3D file ⌀ 18–6 mm (Length: 27 mm) (📦 #2905)
1 object(s) - format STL
Tubing reducer ⌀18 mm to ⌀6 mm in STL format. Length of this connector is 27 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 8 mm, the smaller one of 9 mm. The ends feature a fillet to make tube connection easier.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 8 | mm |
| side A outer diameter | 18 | mm |
| side A thickness | 2 | mm |
| side B length | 9 | mm |
| side B outer diameter | 6 | mm |
| side B thickness | 2 | mm |
| transition length | 10 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL file ⌀ 102–79 mm (Length: 80 mm) (📦 #2901)
1 object(s) - format STL
Tube junction ⌀102 mm to ⌀79 mm in STL 3D format. Final length of this adapter is 80 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 are rounded to ease the connection.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 102 | mm |
| side A thickness | 2 | mm |
| side B length | 30 | mm |
| side B outer diameter | 79 | mm |
| side B thickness | 2 | mm |
| transition length | 20 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL 3D file ⌀ 96–79 mm (Length: 80 mm) (📦 #2900)
1 object(s) - format STL
Tubing adapter ⌀96 mm to ⌀79 mm in STL format. Length of this coupler is 80 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 a fillet to make tube connection easier.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 96 | mm |
| side A thickness | 2 | mm |
| side B length | 30 | mm |
| side B outer diameter | 79 | mm |
| side B thickness | 2 | mm |
| transition length | 20 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL 3D file ⌀ 96–79 mm (Length: 100 mm) (📦 #2899)
1 object(s) - format STL
Tube fitting ⌀96 mm to ⌀79 mm in STL format. Total length of this connector is 100 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 rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 96 | mm |
| side A thickness | 2 | mm |
| side B length | 30 | mm |
| side B outer diameter | 79 | mm |
| side B thickness | 2 | mm |
| transition length | 40 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tube adapter STL file ⌀ 98–80 mm (Length: 98 mm) (📦 #2897)
1 object(s) - format STL
Tubing reducer ⌀98 mm to ⌀80 mm in STL format. Total length of this adapter is 98 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 28 mm. The ends are rounded to facilitate the connection of the two tubes.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 30 | mm |
| side A outer diameter | 98 | mm |
| side A thickness | 3 | mm |
| side B length | 28 | mm |
| side B outer diameter | 80 | mm |
| side B thickness | 3 | mm |
| transition length | 40 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL 3D file ⌀ 148–135 mm (Length: 90 mm) (📦 #2891)
1 object(s) - format STL
Tubing reducer ⌀148 mm to ⌀135 mm in STL format. Total length of this connector is 90 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 50 mm. The ends are not rounded.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 20 | mm |
| side A outer diameter | 148 | mm |
| side A thickness | 3 | mm |
| side B length | 50 | mm |
| side B outer diameter | 135 | mm |
| side B thickness | 3 | mm |
| transition length | 20 | mm |
| axis offset | 0 | mm |
| ends fillet | no fillet |
Tube adapter STL file ⌀ 100–66 mm (Length: 95 mm) (📦 #2876)
1 object(s) - format STL
Tube fitting ⌀100 mm to ⌀66 mm in STL format. Final length of this adapter is 95 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 have a fillet on the outside to facilitate the connection of the two tubes.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 35 | mm |
| side A outer diameter | 100 | mm |
| side A thickness | 2 | mm |
| side B length | 35 | mm |
| side B outer diameter | 66 | mm |
| side B thickness | 2 | mm |
| transition length | 25 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on th... |
Tubing adapter STL 3D file ⌀ 96–66 mm (Length: 95 mm) (📦 #2875)
1 object(s) - format STL
Straight sleeve ⌀96 mm to ⌀66 mm in STL 3D format. Total length of this adapter is 95 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 feature an external fillet to facilitate the connection of the two tubes.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 35 | mm |
| side A outer diameter | 96 | mm |
| side A thickness | 2 | mm |
| side B length | 35 | mm |
| side B outer diameter | 66 | mm |
| side B thickness | 2 | mm |
| transition length | 25 | mm |
| axis offset | 0 | mm |
| ends fillet | fillet on th... |
Tube adapter STL 3D file ⌀ 123–58 mm (Length: 120 mm) (📦 #2866)
1 object(s) - format STL
Straight tube adapter ⌀123 mm to ⌀58 mm in STL format. Length of this reducer is 120 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 50 mm, the smaller one of 50 mm as well. The two axes of the tubes are off-center by 4.9 mm. The ends feature a fillet to facilitate the connection of the two tubes.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 50 | mm |
| side A outer diameter | 123 | mm |
| side A thickness | 5 | mm |
| side B length | 50 | mm |
| side B outer diameter | 58 | mm |
| side B thickness | 5 | mm |
| transition length | 20 | mm |
| axis offset | 4.9 | mm |
| ends fillet | fillet on bo... |
Tubing adapter STL file ⌀ 17–16 mm (Length: 25 mm) (📦 #2852)
1 object(s) - format STL
Inline tube reducer ⌀17 mm to ⌀16 mm in STL 3D format. Length of this sleeve is 25 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 10 mm, the smaller one of 10 mm as well. The ends have no fillet.
| Parameter | Value | Unit |
|---|---|---|
| side A length | 10 | mm |
| side A outer diameter | 17 | mm |
| side A thickness | 2 | mm |
| side B length | 10 | mm |
| side B outer diameter | 16 | mm |
| side B thickness | 2 | mm |
| transition length | 5 | 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.