Custom Round-to-Rectangular Tube Adapter STL file ⌀84 mm to 31×100 mm, thickness 2 mm + offset 📦#6823

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Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀84 mm and a rectangular section with inner dimensions 31×100 mm. The shell thickness is 2 mm and the overall length is 140 mm. The adapter has an offset of 10 mm along the Y axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Generation date: 2026-01-24
3D Model Round-to-Rectangular Tube Adapter STL file ⌀84 mm to 31×100 mm, thickness 2 mm + offset

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Free
  • round-to-rectangular-adapter-d_model6823-nb0_dd{id}.stl : 3.4 Mo
STL Mesh quality : Linear deflection 0.0005 Angular deflection 0.05
No compliance warranty No compliance warranty
(Internal and private use, non-commercial – no distribution – no derivatives)
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Values for this model

This model was generated by the Round to rectangular adapter template, with the following values:
Parameter Value
#1 cylinder outer diameter 84 mm (≃3 5/16 in)
#2 cylinder inlet length 20 mm (≃0.79 in)
#3 rectangle internal length 31 mm (≃1.22 in)
#4 rectangle internal height 100 mm (≃3 15/16 in)
#5 rectangle inlet length 100 mm (≃3 15/16 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 10 mm (≃0.39 in)
#8 total length 140 mm (≃5 1/2 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 80 mm (≃3.15 in)
illustration of the parameters
Parameter overview

  • If the chamfer option on the ends is enabled, the chamfer length is equal to half the thickness.
  • The stop at the bottom of the rectangular section has a width equal to half the thickness.

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 cylinder outer diameter diaC
#2 cylinder inlet length lentC
#3 rectangle internal length lenIR
#4 rectangle internal height heiIR
#5 rectangle inlet length lentR
#6 offset Z ofsZ
#7 offset Y ofsY
#8 total length lenT
#9 thickness thi
#10 chamfer cha

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Parameter Value Unit
cylinder outer diameter 67 mm
cylinder inlet length 30 mm
rectangle internal length 30 mm
rectangle internal height 100 mm
rectangle inlet length 100 mm
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Parameter Value Unit
cylinder outer diameter 33 mm
cylinder inlet length 29 mm
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Round-to-Rectangular Tube Adapter STL file ⌀70 mm to 70×90 mm, thickness 2 mm + offset (📦 #2046)

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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL file ⌀70 mm to 100×30 mm, thickness 3 mm (📦 #4773)

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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL 3D file ⌀70 mm to 100×30 mm, thickness 3 mm (📦 #4774)

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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL 3D file ⌀31 mm to 70×90 mm, thickness 2 mm (📦 #1861)

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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL 3D file ⌀45 mm to 150×120 mm, thickness 2 mm + offset (📦 #1940)

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Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀45 mm and a rectangular section with internal dimensions 150×120 mm. The wall thickness is 2 mm and the total length is 130 mm. The adapter has an offset of 15 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
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cylinder inlet length 25 mm
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Round-to-Rectangular Tube Adapter STL file ⌀105 mm to 80×80 mm, thickness 2 mm (📦 #3740)

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Parameter Value Unit
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Parameter Value Unit
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cylinder inlet length 25 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀84 mm to 85×85 mm, thickness 2 mm (📦 #3219)

1 object(s) - format STL
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Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀84 mm and a rectangular section with internal dimensions 85×85 mm. The shell thickness is 2 mm and the overall length is 150 mm.
Parameter Value Unit
cylinder outer diameter 84 mm
cylinder inlet length 30 mm
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rectangle internal height 85 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 200×25 mm, thickness 2 mm (📦 #2093)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 200×25 mm, thickness 2 mm
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀100 mm and a rectangular section with inner dimensions 200×25 mm. The wall thickness is 2 mm and the total length is 147 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
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thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×25 mm, thickness 2 mm + offset (📦 #2094)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×25 mm, thickness 2 mm + offset
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 200×25 mm. The shell thickness is 2 mm and the overall length is 147 mm. The adapter has an offset of 13.5 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 200 mm
rectangle internal height 25 mm
rectangle inlet length 100 mm
offset Z 13.5 mm
offset Y 0 mm
total length 147 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 120×120 mm, thickness 2 mm (📦 #1800)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 120×120 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀120 mm and a rectangular section with internal dimensions 120×120 mm. The shell thickness is 2 mm and the overall length is 200 mm. A chamfer is applied on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 120 mm
rectangle inlet length 100 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀90 mm to 100×50 mm, thickness 2 mm (📦 #3061)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀90 mm to 100×50 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀90 mm and a rectangular section with internal dimensions 100×50 mm. The shell thickness is 2 mm and the overall length is 120 mm.
Parameter Value Unit
cylinder outer diameter 90 mm
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rectangle internal length 100 mm
rectangle internal height 50 mm
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1 object(s) - format STL
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Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀106 mm and a rectangular section with internal dimensions 50×50 mm. The wall thickness is 3 mm and the overall length is 100 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
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cylinder inlet length 15 mm
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1 object(s) - format STL
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3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀128 mm and a rectangular section with internal dimensions 114×58 mm. The shell thickness is 3 mm and the total length is 220 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 128 mm
cylinder inlet length 50 mm
rectangle internal length 114 mm
rectangle internal height 58 mm
rectangle inlet length 99 mm
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offset Y 0 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀124 mm to 110×55 mm, thickness 2 mm (📦 #6752)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀124 mm to 110×55 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀124 mm and a rectangular section with internal dimensions 110×55 mm. The shell thickness is 2 mm and the overall length is 200 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 124 mm
cylinder inlet length 50 mm
rectangle internal length 110 mm
rectangle internal height 55 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 200×40 mm, thickness 3 mm + offset (📦 #7431)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 200×40 mm, thickness 3 mm + offset
Model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 200×40 mm. The shell thickness is 3 mm and the overall length is 150 mm. The adapter has an offset of 3 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 25 mm
rectangle internal length 200 mm
rectangle internal height 40 mm
rectangle inlet length 80 mm
offset Z 3 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀21.9 mm to 80×80 mm, thickness 2 mm + offset (📦 #2896)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀21.9 mm to 80×80 mm, thickness 2 mm + offset
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀21.9 mm and a rectangular section with internal dimensions 80×80 mm. The wall thickness is 2 mm and the total length is 90 mm. The adapter has an offset of 7.5 mm along the Y axis and 7.5 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 21.9 mm
cylinder inlet length 30 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 35 mm
offset Z 7.5 mm
offset Y 7.5 mm
total length 90 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 60×60 mm, thickness 2 mm (📦 #1919)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 60×60 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀80 mm and a rectangular section with inner dimensions 60×60 mm. The shell thickness is 2 mm and the overall length is 100 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 80 mm
cylinder inlet length 30 mm
rectangle internal length 60 mm
rectangle internal height 60 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀42 mm to 120×40 mm, thickness 2 mm + offset (📦 #1864)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀42 mm to 120×40 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀42 mm and a rectangular section with inner dimensions 120×40 mm. The wall thickness is 2 mm and the total length is 200 mm. The adapter has an offset of 25 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 42 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 40 mm
rectangle inlet length 100 mm
offset Z 25 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer chamfers on ...