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Small parts organizer with 4 drawers 20×80×80 mm STL file, thickness: 2 mm

Small parts organizer with 25 drawers 40×30×50 mm STL 3D file, thickness: 2 mm

Round box with lid STL 3D file ⌀ 80 mm - Height: 50 mm, Shell: 3 mm

Round box with lid STL 3D file ⌀ 100 mm - Height: 20 mm, Shell: 3 mm

Round box with lid STL file ⌀ 45 mm - Height: 40 mm, Shell: 2 mm

Tube adapter STL file ⌀ 100–60 mm (Length: 70 mm)

Shelf bracket 110×110 mm STL file, thickness 8 mm, hole diameter 6 mm

Pipe elbow STL file 30° ⌀OD: 60 mm ⌀ID: 58 mm thickness: 1 mm

Tube adapter STL 3D file ⌀ 80–50 mm (Length: 80 mm)

Small parts organizer with 1 drawer 80×80×80 mm STL file, thickness: 3 mm

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Featured Model

Small parts organizer with 20 drawers 45×25×25 mm STL 3D file, thickness: 2 mm 📦 #2863

2 object(s) - format STL

Latest model generated online:

Tubing adapter STL 3D file ⌀ 60–51 mm (Length: 55 mm) 📦 #2994

1 object(s) - format STL

From the blog

A template to help you get organized

2025-09-22 · New templates · sylvain

A new template is now available on iteration3d.fr!

Discover the drawer storage organizer generator, perfect for sorting your screws and small parts directly with 3D printing.

Everything is customizable: number of rows and columns, inner drawer dimensions, wall thickness, and even removable dividers to multiply compartments.

The design was made to stay easy to print: rounded corners, vertical handles without support, and the option to choose different colors to improve organization.

Start printing now!

Read the article

A selection of custom 3D models

📦 Model #1862

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×48 mm, thickness 2 mm + offset

Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀60 mm and a rectangular section with internal dimensions 100×48 mm. The shell thickness is 2 mm and the overall length is 100 mm. The adapter has an offset of 15 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	60	mm
cylinder inlet length	30	mm
rectangle internal length	100	mm
rectangle internal height	48	mm
rectangle inlet length	30	mm
offset Z	15	mm
offset Y	0	mm
total length	100	mm
thickness	2	mm
chamfer	chamfers on ...

📦 Model #1792

2 object(s)

- format STL

Enclosure with screw-mounted lid STL file: 100×50×50 mm

Download this enclosure model with a screwed lid in 3D STL format. The dimensions are 100 mm long by 50 mm wide and 50 mm high. The cover only measures 10 mm high. Side thickness is 4 mm. The enclosure does not feature cooling.

Parameter	Value	Unit
length	100	mm
width	50	mm
total height	50	mm
lid height	10	mm
wall thickness	4	mm
screw margin	0.2	mm
fit clearance	0.2	mm
cooling zone(s)	no cutouts

📦 Model #1806

1 object(s)

- format STL

O-ring STL file ID 54 × CS 3 mm

Model of O-ring (torus-shaped seal) with Internal diameter 54 mm by CS 3 mm. The outer diameter resulting is 60 mm.

Parameter	Value	Unit
inner diameter (ID)	54	mm
cross section (CS)	3	mm

📦 Model #1762

1 object(s)

- format STL

Washer / Flat Gasket STL file ⌀ID: 38.7 mm ⌀OD: 42.8 mm thickness: 1 mm

File of gasket / washer in STL file format. This model has an internal diameter of ⌀38.7 mm and an external diameter of ⌀42.8 mm. The part thickness is 1 mm. There is no finish available.

Parameter	Value	Unit
inner diameter	38.7	mm
outer diameter	42.8	mm
thickness	1	mm
finish	none

📦 Model #1605

1 object(s)

- format STL

Pipe elbow STL file 90° ⌀OD: 20 mm ⌀ID: 16 mm thickness: 2 mm

File of an elbow with a 90° angle in STL format. This pipe elbow has an external diameter of 20 mm and an internal diameter of 16 mm. The tube thickness is therefore 2 mm. The ends feature fillets to make it easier to assemble.

Parameter	Value	Unit
outer diameter	20	mm
inner diameter	16	mm
angle	90	°
end fillets	yes

📦 Model #1758

1 object(s)

- format STL

Tube adapter STL file ⌀ 150–75 mm (Length: 80 mm)

Inline sleeve ⌀150 mm to ⌀75 mm in STL format. Final length of this fitting is 80 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 rounded on the inside to facilitate the connection of the two tubes.

Parameter	Value	Unit
side A length	20	mm
side A outer diameter	150	mm
side A thickness	2	mm
side B length	20	mm
side B outer diameter	75	mm
side B thickness	2	mm
transition length	40	mm
axis offset	0	mm
ends fillet	fillet on th...

📦 Model #1833

1 object(s)

- format STL

Round air vent STL file ∅ 210 mm, slat angle: 45° with central reinforcement

3D file of a round grille for ventilation in STL format. Its insertion diameter measures 210 mm. The slats have an angle of 45° and a low thickness of 1.4 mm. A vertical reinforcement secures the slats. This 3D ventilation grille has a thin flange of 5 mm. The full diameter of this model is 220 mm.

Parameter	Value	Unit
male diameter	210	mm
slat angle	45	°
slat thickness	1.4	mm
flange width	5	mm
central reinforcement	yes

📦 Model #1801

1 object(s)

- format STL

Tube adapter STL file ⌀ 110–100 mm (Length: 35 mm)

Tube coupler ⌀110 mm to ⌀100 mm in STL format. Final length of this adapter is 35 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 10 mm. The ends are raw.

Parameter	Value	Unit
side A length	20	mm
side A outer diameter	110	mm
side A thickness	3	mm
side B length	10	mm
side B outer diameter	100	mm
side B thickness	3	mm
transition length	5	mm
axis offset	0	mm
ends fillet	no fillet

📦 Model #1698

1 object(s)

- format STL

Washer / Flat Gasket STL file ⌀ID: 30 mm ⌀OD: 40 mm thickness: 4 mm + chamfers

3D model of washer / gasket in STL format. This part has an inner diameter of ⌀30 mm and an outer diameter of ⌀40 mm. The part thickness is 4 mm. Chamfers are applied on the outer diameter, each with a value of 1.5 mm. These finishes are present on the top and bottom.

Parameter	Value	Unit
inner diameter	30	mm
outer diameter	40	mm
thickness	4	mm
finish	chamfer
finish position	outer
sides	two sides
finish value	1.5	mm

📦 Model #1673

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 300×300 mm, thickness 3 mm + offset

3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀150 mm and a rectangular section with inner dimensions 300×300 mm. The shell thickness is 3 mm and the total length is 180 mm. The adapter has an offset of 4 mm along the Y axis and 4 mm along the Z axis.

Parameter	Value	Unit
cylinder outer diameter	150	mm
cylinder inlet length	50	mm
rectangle internal length	300	mm
rectangle internal height	300	mm
rectangle inlet length	70	mm
offset Z	4	mm
offset Y	4	mm
total length	180	mm
thickness	3	mm
chamfer	no chamfer

📦 Model #1541

2 object(s)

- format STL

Round box with lid STL 3D file ⌀ 40 mm - Height: 30 mm, Shell: 2 mm

Get this cylindrical storage box model in 3D STL format. Its diameter is 40 mm and its total height is 30 mm. The wall thickness is 2 mm. A fillet located at the bottom of the box makes it easier to grab objects located inside.

Parameter	Value	Unit
external diameter	40	mm
total height	30	mm
wall thickness	2	mm
fit clearance	0.2	mm
inner bottom fillet	1	mm

📦 Model #1755

1 object(s)

- format STL

Pipe elbow STL file 26° ⌀OD: 4 mm ⌀ID: 3 mm thickness: 0.5 mm

File of an elbow with a 26° angle in STL format. This elbow has an outer diameter of 4 mm and an inner diameter of 3 mm. This results in a tube thickness of 0.5 mm. End fillets make it easier to assemble.

Parameter	Value	Unit
outer diameter	4	mm
inner diameter	3	mm
angle	26	°
end fillets	yes

📦 Model #1793

1 object(s)

- format STL

Tube adapter STL file ⌀ 66–41 mm (Length: 90 mm)

Straight tube adapter ⌀66 mm to ⌀41 mm in STL format. Length of this reducer is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 45 mm. The ends have a fillet on the outside to facilitate the connection of the two tubes.

Parameter	Value	Unit
side A length	40	mm
side A outer diameter	66	mm
side A thickness	2	mm
side B length	45	mm
side B outer diameter	41	mm
side B thickness	2	mm
transition length	5	mm
axis offset	0	mm
ends fillet	fillet on th...

📦 Model #1552

1 object(s)

- format STL

Pipe elbow STL 3D file 90° ⌀OD: 43 mm ⌀ID: 39.2 mm thickness: 1.9 mm

3D file of an elbow with a 90° angle in STL format. This elbow has an outer diameter of 43 mm and an inner diameter of 39.2 mm. This results in a tube thickness of 1.9 mm.

Parameter	Value	Unit
outer diameter	43	mm
inner diameter	39.2	mm
angle	90	°
end fillets	no

📦 Model #1631

2 object(s)

- format STL

Enclosure with screw-mounted lid STL 3D file: 70×40×22 mm

Download this enclosure with a screwed lid in STL format. The dimensions are 70 mm long by 40 mm wide and 22 mm high. The cover only is 10 mm high. Side thickness is 2 mm. The enclosure does not feature cooling.

Parameter	Value	Unit
length	70	mm
width	40	mm
total height	22	mm
lid height	10	mm
wall thickness	2	mm
screw margin	-0.2	mm
fit clearance	0	mm
cooling zone(s)	no cutouts

📦 Model #1851

2 object(s)

- format STL

Color-coded compartment box STL 3D file: 5 compartments of 30×40×20 mm

This parametric sectioned box with color codes features 5 cavities measuring 30×40×20 mm each. The total dimensions are 38×224×24 mm. Fillets of 5 mm applied to all compartments, make it easier to grasp items stored in the compartments. The walls are particularly solid.

Parameter	Value	Unit
number of rows	5
number of columns	1
compartment length	30	mm
compartment width	40	mm
compartment height	20	mm
wall thickness	4	mm
compartment fillet (radius)	5	mm
row colors	AAAAA

📦 Model #1779

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 180×100.2 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 180×100.2 mm. The shell thickness is 3 mm and the total length is 240 mm. The adapter has an offset of 60 mm along the Z axis.

Parameter	Value	Unit
cylinder outer diameter	100	mm
cylinder inlet length	50	mm
rectangle internal length	180	mm
rectangle internal height	100.2	mm
rectangle inlet length	50	mm
offset Z	60	mm
offset Y	0	mm
total length	240	mm
thickness	3	mm
chamfer	no chamfer

📦 Model #1848

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL file ⌀80 mm to 30×30 mm, thickness 4 mm + offset

3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀80 mm and a rectangular section with inner dimensions 30×30 mm. The shell thickness is 4 mm and the overall length is 240 mm. The adapter has an offset of 20 mm along the Y axis and 20 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	80	mm
cylinder inlet length	100	mm
rectangle internal length	30	mm
rectangle internal height	30	mm
rectangle inlet length	100	mm
offset Z	20	mm
offset Y	20	mm
total length	240	mm
thickness	4	mm
chamfer	chamfers on ...

📦 Model #1649

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL 3D file ⌀110 mm to 220×220 mm, thickness 3 mm + offset

3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀110 mm and a rectangular section with inner dimensions 220×220 mm. The wall thickness is 3 mm and the overall length is 120 mm. The adapter has an offset of 20 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	110	mm
cylinder inlet length	30	mm
rectangle internal length	220	mm
rectangle internal height	220	mm
rectangle inlet length	50	mm
offset Z	20	mm
offset Y	0	mm
total length	120	mm
thickness	3	mm
chamfer	chamfers on ...

📦 Model #1558

1 object(s)

- format STL

Round air vent STL 3D file ∅ 90 mm, slat angle: 35° with central reinforcement

Design of a round grille for air circulation in STL format. Its insertion diameter is 90 mm. The slats have an angle of 35° and a high thickness of 2.4 mm. A centered vertical reinforcement strengthens the whole structure. This aeration grille features a prominent flange of 18 mm. The total diameter of the model is 126 mm.

Parameter	Value	Unit
male diameter	90	mm
slat angle	35	°
slat thickness	2.4	mm
flange width	18	mm
central reinforcement	yes

📦 Model #1815

1 object(s)

- format STL

Washer / Flat Gasket STL 3D file ⌀ID: 57 mm ⌀OD: 71 mm thickness: 5 mm + fillet

Model of washer / gasket in STL file format. This part features an internal diameter of ⌀57 mm and an external diameter of ⌀71 mm. The total thickness is 5 mm. A fillet is applied on the internal diameter with a value of 4 mm.

Parameter	Value	Unit
inner diameter	57	mm
outer diameter	71	mm
thickness	5	mm
finish	fillet
finish position	inner
sides	one side
finish value	4	mm

📦 Model #1571

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 80×50 mm, thickness 3 mm + offset

3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀150 mm and a rectangular section with internal dimensions 80×50 mm. The wall thickness is 3 mm and the overall length is 150 mm. The adapter has an offset of 25 mm along the Y axis and 25 mm along the Z axis.

Parameter	Value	Unit
cylinder outer diameter	150	mm
cylinder inlet length	50	mm
rectangle internal length	80	mm
rectangle internal height	50	mm
rectangle inlet length	50	mm
offset Z	25	mm
offset Y	25	mm
total length	150	mm
thickness	3	mm
chamfer	no chamfer

📦 Model #1700

1 object(s)

- format STL

Washer / Flat Gasket STL file ⌀ID: 26 mm ⌀OD: 40 mm thickness: 8 mm + chamfers

File of gasket / washer in STL format. This part has an inner diameter of ⌀26 mm and an outer diameter of ⌀40 mm. The total thickness is 8 mm. Chamfers are present on both the inner diameter and the outer diameter, each with a value of 1.5 mm. These finishes are present on both sides.

Parameter	Value	Unit
inner diameter	26	mm
outer diameter	40	mm
thickness	8	mm
finish	chamfer
finish position	inner + oute...
sides	two sides
finish value	1.5	mm

📦 Model #1569

2 object(s)

- format STL

Enclosure with screw-mounted lid STL file: 100×70×50 mm

Download this enclosure model with lid in 3D STL format. The dimensions are 100 mm long by 70 mm wide and 50 mm high. The cover measures 12 mm high. Wall thickness is 2 mm. The enclosure does not feature cooling.

Parameter	Value	Unit
length	100	mm
width	70	mm
total height	50	mm
lid height	12	mm
wall thickness	2	mm
screw margin	0	mm
fit clearance	0.2	mm
cooling zone(s)	no cutouts

📦 Model #1687

1 object(s)

- format STL

Round air vent STL 3D file ∅ 135 mm, slat angle: 60° with central reinforcement

Design of a round grille for air circulation in STL format. Its male diameter measures 135 mm. The slats have a steep angle of 60° and a high thickness of 2.4 mm. A centered vertical reinforcement secures the slats. This 3D vent grille has a collar of 10 mm. The overall diameter of this model is 155 mm.

Parameter	Value	Unit
male diameter	135	mm
slat angle	60	°
slat thickness	2.4	mm
flange width	10	mm
central reinforcement	yes

📦 Model #1858

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×50 mm, thickness 2 mm + offset

Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀60 mm and a rectangular section with internal dimensions 100×50 mm. The shell thickness is 2 mm and the overall length is 150 mm. The adapter has an offset of 15 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	60	mm
cylinder inlet length	50	mm
rectangle internal length	100	mm
rectangle internal height	50	mm
rectangle inlet length	46	mm
offset Z	15	mm
offset Y	0	mm
total length	150	mm
thickness	2	mm
chamfer	chamfers on ...

📦 Model #1699

1 object(s)

- format STL

Washer / Flat Gasket STL 3D file ⌀ID: 30 mm ⌀OD: 40 mm thickness: 6 mm + chamfers

3D file of washer / gasket in STL 3D file format. This part has an inner diameter of ⌀30 mm and an outer diameter of ⌀40 mm. The thickness is 6 mm. Chamfers are present on the outer diameter, each with a value of 1.5 mm. These finishes are present on both faces.

Parameter	Value	Unit
inner diameter	30	mm
outer diameter	40	mm
thickness	6	mm
finish	chamfer
finish position	outer
sides	two sides
finish value	1.5	mm

📦 Model #1581

1 object(s)

- format STL

O-ring STL 3D file ID 28.5 × CS 3.5 mm

STL file of rubber ring with dimensions ID (inner diameter) 28.5 mm by CS (cross section) 3.5 mm. Outer diameter (OD) resulting is 35.5 mm.

Parameter	Value	Unit
inner diameter (ID)	28.5	mm
cross section (CS)	3.5	mm

📦 Model #1869

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×45 mm, thickness 2 mm + offset

3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀60 mm and a rectangular section with inner dimensions 100×45 mm. The wall thickness is 2 mm and the total length is 90 mm. The adapter has an offset of 15 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	60	mm
cylinder inlet length	30	mm
rectangle internal length	100	mm
rectangle internal height	45	mm
rectangle inlet length	30	mm
offset Z	15	mm
offset Y	0	mm
total length	90	mm
thickness	2	mm
chamfer	chamfers on ...

📦 Model #1656

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL 3D file ⌀85 mm to 105×50 mm, thickness 2 mm + offset

Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀85 mm and a rectangular section with internal dimensions 105×50 mm. The shell thickness is 2 mm and the overall length is 150 mm. The adapter has an offset of 15 mm along the Z axis.

Parameter	Value	Unit
cylinder outer diameter	85	mm
cylinder inlet length	50	mm
rectangle internal length	105	mm
rectangle internal height	50	mm
rectangle inlet length	46	mm
offset Z	15	mm
offset Y	0	mm
total length	150	mm
thickness	2	mm
chamfer	no chamfer

STL: Advantages and Disadvantages for 3D Printing

The STL format is, without question, a cornerstone of 3D printing. This exchange format has established itself as the universal standard for representing 3D models ever since the early days of stereolithography. Its main strength lies in its simplicity: it describes the surface of an object using countless small triangles that form a mesh. This approach, known as tessellation, makes STL 3D files universally compatible with nearly all CAD software and slicers. If you’d like to learn more about this format, check out our article STL: What Is This 3D File Format?.

One of the major advantages of the format lies in this universality: whether you’re using a complex modeling program or a simpler design tool, you can export your 3D models in STL 3D format with near certainty that they’ll be interpreted correctly by your 3D printer. This ease of exchange has played a key role in the widespread adoption of 3D printing, allowing anyone to share and print objects without worrying about software compatibility. Once again, simplicity is its greatest strength.

However, that same simplicity also brings certain limitations. The triangle mesh, while effective for describing geometry, contains no information about colors, textures, or materials. For more advanced projects requiring these details, the STL format starts to show its weaknesses. Additionally, print quality depends directly on the fineness of the tessellation: too few triangles can lead to rough or faceted surfaces, while an overly dense mesh can make the file unnecessarily heavy.

Another notable drawback is the lack of unit management. An STL file doesn’t specify whether dimensions are in millimeters, centimeters, or inches, which can sometimes cause scaling errors when importing into a slicer. Despite these limitations, the STL format remains the go-to standard for converting your 3D models into G-code — the language your printer understands. It continues to be the preferred choice for its robustness and broad compatibility, even as newer formats like 3MF emerge for more specialized needs.

What is parametric modeling?

Parametric modeling is a fundamental approach in computer-aided design (CAD) that reshapes how 3D models are created and managed. Far from being a simple drawing technique, it represents a genuine design philosophy where objects are defined not by fixed shapes, but by variables and intelligent relationships.

This method makes it possible to modify the length, width, or diameter of a part and have the entire design adapt automatically, without the need to redraw everything. At the core of the process are parameters—numerical values (length, angle, thickness, etc.)—linked together through constraints and formulas. For instance, the diameter of a hole can be defined as half the width of a plate; if the width changes, the hole’s diameter instantly adjusts, ensuring the consistency of the design. This interdependence makes 3D models flexible and responsive to changes. One of the main advantages of parametric modeling lies in its ability to simplify customization and enable rapid iteration of designs.

Whether through modeling software such as Fusion 360 or FreeCAD, or through code-based libraries like build123d, this approach allows effortless exploration of a wide range of variations. Such flexibility is especially valuable across multiple fields—from mechanical engineering and architecture to consumer product design. It saves considerable time, reduces errors, and improves the performance of parts.

By defining design intent from the start through these parameters and constraints, the model preserves its integrity and functionality even after numerous modifications. It is a powerful way to transform an idea into a tangible object, ready to adapt to new situations.