Custom Round-to-Rectangular Tube Adapter STL 3D file ⌀20 mm to 40×40 mm, thickness 5 mm 📦#8250

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Model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀20 mm and a rectangular section with inner dimensions 40×40 mm. The shell thickness is 5 mm and the overall length is 100 mm.
Generation date: 2026-04-04
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀20 mm to 40×40 mm, thickness 5 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model8250-nb0_dd{id}.stl : 2.1 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 20 mm (≃0.79 in)
#2 cylinder inlet length 20 mm (≃0.79 in)
#3 rectangle internal length 40 mm (≃1 9/16 in)
#4 rectangle internal height 40 mm (≃1 9/16 in)
#5 rectangle inlet length 60 mm (≃2 3/8 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 100 mm (≃3 15/16 in)
#9 thickness 5 mm (≃3/16 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 10 mm (≃0.39 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
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Parameter Value Unit
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Parameter Value Unit
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1 object(s) - format STL
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1 object(s) - format STL
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Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀20 mm and a rectangular section with inner dimensions 25×5 mm. The wall thickness is 3 mm and the overall length is 85 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 20 mm
cylinder inlet length 25 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀48.5 mm to 80×80 mm, thickness 3 mm
Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀48.5 mm and a rectangular section with inner dimensions 80×80 mm. The wall thickness is 3 mm and the overall length is 90 mm.
Parameter Value Unit
cylinder outer diameter 48.5 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 125.5×127.5 mm, thickness 5 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 125.5×127.5 mm. The shell thickness is 5 mm and the total length is 100 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 125.5 mm
rectangle internal height 127.5 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 5 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀65 mm to 56×70 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀65 mm and a rectangular section with inner dimensions 56×70 mm. The shell thickness is 3 mm and the total length is 75 mm.
Parameter Value Unit
cylinder outer diameter 65 mm
cylinder inlet length 20 mm
rectangle internal length 56 mm
rectangle internal height 70 mm
rectangle inlet length 35 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 35×25 mm, thickness 3 mm (📦 #2245)

1 object(s) - format STL
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Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀50 mm and a rectangular section with inner dimensions 35×25 mm. The wall thickness is 3 mm and the total length is 100 mm.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 25 mm
rectangle internal length 35 mm
rectangle internal height 25 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 130 mm
rectangle internal height 100 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 5 mm
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