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Box STL 3D file with dimensions 50×50×60 mm

Pipe elbow STL 3D file 180° ⌀OD: 18 mm ⌀ID: 16 mm thickness: 1 mm

Pipe elbow STL file 120° ⌀OD: 40 mm ⌀ID: 34 mm thickness: 3 mm

Protective grid STL 3D file, center-to-center: 70x70mm, mesh: 10mm - Ø4mm

Enclosure with screw-mounted lid STL file: 100×100×20 mm (with ventilation on the lid and under the enclosure)

Round-to-Rectangular Tube Adapter STL file ⌀125 mm to 60×60 mm, thickness 3 mm

Multi-compartment box STL 3D file: 36 compartments of 17×17×80 mm

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

Pot STL 3D file, inner: base Ø50 mm, top Ø80 mm, height 70 mm - wall thickness 2 mm

Mounting bracket 120×120 mm STL file, thickness 8 mm, hole diameter 5 mm

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Featured Model

Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 80×80 mm, thickness 3 mm 📦 #1527

1 object(s) - format STL

Latest model generated online:

O-ring STL 3D file ID 70 × CS 10 mm 📦 #3156

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 #1740

1 object(s)

- format STL

Pipe elbow STL 3D file 10° ⌀OD: 40 mm ⌀ID: 34.8 mm thickness: 2.6 mm

3D file of a pipe elbow with a 10° angle in STL format. This elbow features an external diameter of 40 mm and an internal diameter of 34.8 mm. This results in a tube thickness of 2.6 mm.

Parameter	Value	Unit
outer diameter	40	mm
inner diameter	34.8	mm
angle	10	°
end fillets	no

📦 Model #1007

1 object(s)

- format STL

U-shaped handle STL file 50×140×20 mm (Center-to-center 120 mm)

Download this file of a simple U-shaped drawer handle. The external dimensions are 50×140×20 mm. The handle has a round cross-section combined with a straight transition. The bores are 5 mm diameter and have a 120 mm center-to-center distance.

Parameter	Value	Unit
width	50	mm
length	140	mm
thickness	20	mm
shape (0:square,1:circle)	1
transition (0:right,1:rounded)	0
fillet radius	0	mm
hole diameter	5	mm

📦 Model #866

1 object(s)

- format STL

U-shaped handle STL 3D file 35×140×10 mm (Center-to-center 130 mm)

Download this STL file of a U-shaped handle. The overall dimensions are 35×140×10 mm. This handle features a circular profile and a rounded transition. The bores are 5 mm diameter and have a 130 mm center-to-center distance.

Parameter	Value	Unit
width	35	mm
length	140	mm
thickness	10	mm
shape (0:square,1:circle)	1
transition (0:right,1:rounded)	1
fillet radius	0	mm
hole diameter	5	mm

📦 Model #3046

1 object(s)

- format STL

Tubing adapter STL 3D file ⌀ 65–47 mm (Length: 80 mm)

Straight tube fitting ⌀65 mm to ⌀47 mm in STL format. 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 raw.

Parameter	Value	Unit
side A length	30	mm
side A outer diameter	65	mm
side A thickness	2	mm
side B length	30	mm
side B outer diameter	47	mm
side B thickness	2	mm
transition length	20	mm
axis offset	0	mm
ends fillet	no fillet

📦 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 #1141

2 object(s)

- format STL

Enclosure with screw-mounted lid STL file: 76×46×25 mm (with ventilation on the lid)

Enclosure with a screwed lid in STL format. The dimensions are 76 mm long by 46 mm wide and 25 mm high. The cover is 15 mm high. Side thickness is 3 mm. This enclosure has significant cooling area on the lid.

Parameter	Value	Unit
length	76	mm
width	46	mm
total height	25	mm
lid height	15	mm
wall thickness	3	mm
screw margin	0	mm
fit clearance	0.1	mm
cooling level	6
cooling zone(s)	cutouts on t...

📦 Model #2553

1 object(s)

- format STL

Tube adapter STL file ⌀ 39–31 mm (Length: 80 mm)

Tube connector ⌀39 mm to ⌀31 mm in STL format. Length of this adapter is 80 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 40 mm. The ends feature an external fillet.

Parameter	Value	Unit
side A length	20	mm
side A outer diameter	39	mm
side A thickness	2	mm
side B length	40	mm
side B outer diameter	31	mm
side B thickness	2	mm
transition length	20	mm
axis offset	0	mm
ends fillet	fillet on th...

📦 Model #2978

1 object(s)

- format STL

Tubing adapter STL 3D file ⌀ 50–40 mm (Length: 108 mm)

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

📦 Model #3068

1 object(s)

- format STL

Support bracket 180×170 mm STL file, thickness 8 mm, hole diameter 8 mm

Download this 3D model of an angle bracket with a central reinforcement in STL 3D format. The dimensions are 180 mm in length, 170 mm in height, 40 mm in width, and 8 mm in thickness. The holes are designed with a diameter of 8 mm. Chamfers are applied to the holes for a cleaner fit of the screws. The reinforcing bar improves rigidity and includes two passages for fastening. This bracket prints without support, printed flat directly on the build plate.

Parameter	Value	Unit
length	180	mm
height	170	mm
width	40	mm
thickness	8	mm
hole diameter	8	mm
chamfer on the holes	yes

📦 Model #869

1 object(s)

- format STL

U-shaped handle STL file 35×140×14 mm (Center-to-center 126 mm)

Download this STL 3D model of a simple U-shaped handle. The overall dimensions are 35×140×14 mm. The handle has a square profile combined with a right-angled transition. The bores are 5 mm diameter and have a 126 mm center-to-center distance.

Parameter	Value	Unit
width	35	mm
length	140	mm
thickness	14	mm
shape (0:square,1:circle)	0
transition (0:right,1:rounded)	0
fillet radius	0	mm
hole diameter	5	mm

📦 Model #2867

3 object(s)

- format STL

Small parts organizer with 5 drawers 20×31×22 mm STL file, thickness: 2 mm

Download this 3D file of a storage case in STL format. This model contains 5 drawers, arranged in 1 rows and 5 columns. In detail, this means 1 rows of 5 drawers. Each drawer has usable dimensions of 20 mm wide, 31 mm high, and 22 mm deep. The wall thickness is 2 mm. The drawers feature 1 divider each, which allows up to 2 compartments per drawer and up to 10 sections in total. The overall dimensions of the structure come to 134.5 x 37.5 x 28 mm. All the objects in this model were designed to be printed without support.

Parameter	Value	Unit
number of rows	1
number of columns	5
inner drawer depth	22	mm
inner drawer width	20	mm
inner drawer height	31	mm
wall thickness	2	mm
removable divider	one divider ...

📦 Model #937

1 object(s)

- format STL

U-shaped handle STL 3D file 50×100×14 mm (Center-to-center 86 mm)

Download this STL file of a simple U-shaped furniture handle. The overall dimensions are 50×100×14 mm. The handle features a round cross-section combined with a smooth transition. The bores are 4 mm diameter and have a 86 mm center-to-center distance.

Parameter	Value	Unit
width	50	mm
length	100	mm
thickness	14	mm
shape (0:square,1:circle)	1
transition (0:right,1:rounded)	1
fillet radius	0	mm
hole diameter	4	mm

📦 Model #3070

1 object(s)

- format STL

Tubing adapter STL 3D file ⌀ 100–71 mm (Length: 190 mm)

Tubing reducer ⌀100 mm to ⌀71 mm in STL format. Final length of this fitting is 190 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 50 mm, the smaller one of 70 mm. The ends are not rounded.

Parameter	Value	Unit
side A length	50	mm
side A outer diameter	100	mm
side A thickness	3	mm
side B length	70	mm
side B outer diameter	71	mm
side B thickness	3	mm
transition length	70	mm
axis offset	0	mm
ends fillet	no fillet

📦 Model #3052

1 object(s)

- format STL

L-bracket 150×100 mm STL file, thickness 8 mm, hole diameter 8 mm

Download this 3D file of a right-angle bracket with a central reinforcement in STL 3D format. The dimensions are 150 mm in length, 100 mm in height, 20 mm in width, and 8 mm in thickness. The mounting holes are designed with a diameter of 8 mm. Chamfers are done to the holes to improve the seating of the heads. The central reinforcement bar reduces bending and includes two openings for fastening. This bracket prints without support, placed flat on the build plate.

Parameter	Value	Unit
length	150	mm
height	100	mm
width	20	mm
thickness	8	mm
hole diameter	8	mm
chamfer on the holes	yes

📦 Model #2882

1 object(s)

- format STL

Tube elbow STL 3D file 180° ⌀OD: 64 mm ⌀ID: 62 mm thickness: 1 mm

3D model of an elbow with a 180° angle in STL format. This pipe elbow features an external diameter of 64 mm and an internal diameter of 62 mm. This results in a tube thickness of 1 mm.

Parameter	Value	Unit
outer diameter	64	mm
inner diameter	62	mm
angle	180	°
end fillets	no

📦 Model #1165

1 object(s)

- format STL

Tube adapter STL file ⌀ 85–60 mm (Length: 45 mm)

Tube coupler ⌀85 mm to ⌀60 mm in STL format. Final length of this connector is 45 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	85	mm
side A thickness	3	mm
side B length	20	mm
side B outer diameter	60	mm
side B thickness	3	mm
transition length	5	mm
axis offset	0	mm
ends fillet	no fillet

📦 Model #3051

2 object(s)

- format STL

Enclosure with screw-mounted lid STL 3D file: 250×250×60 mm (with ventilation on the lid and under the enclosure)

Download this enclosure model with screwed lid in STL format. The dimensions are 250 mm long by 250 mm wide and 60 mm high. The cover measures 15 mm high. Wall thickness is 4 mm. This enclosure has strong cooling area on the lid and under the base.

Parameter	Value	Unit
length	250	mm
width	250	mm
total height	60	mm
lid height	15	mm
wall thickness	4	mm
screw margin	0	mm
fit clearance	0.1	mm
cooling level	10
cooling zone(s)	cutouts on b...

📦 Model #2759

1 object(s)

- format STL

Pipe elbow STL 3D file 45° ⌀OD: 26 mm ⌀ID: 20 mm thickness: 3 mm

Model of a tubing elbow with a 45° angle in STL format. This pipe elbow features an outer diameter of 26 mm and an inner diameter of 20 mm. This results in a tube thickness of 3 mm.

Parameter	Value	Unit
outer diameter	26	mm
inner diameter	20	mm
angle	45	°
end fillets	no

📦 Model #1129

2 object(s)

- format STL

Round box with lid STL 3D file ⌀ 60 mm - Height: 20 mm, Shell: 2 mm

Get this round storage box in STL format. Its diameter is 60 mm and its total height is 20 mm. The walls have a thickness of 2 mm.

Parameter	Value	Unit
external diameter	60	mm
total height	20	mm
wall thickness	2	mm
fit clearance	0.1	mm
inner bottom fillet	0	mm

📦 Model #834

1 object(s)

- format STL

U-shaped handle STL file 35×100×20 mm (Center-to-center 80 mm)

Download this 3D file of a simple U-shaped handle. The overall dimensions are 35×100×20 mm. The handle features a square cross-section combined with a straight transition. The mounting holes are 6 mm diameter and have a 80 mm center-to-center distance.

Parameter	Value	Unit
width	35	mm
length	100	mm
thickness	20	mm
shape (0:square,1:circle)	0
transition (0:right,1:rounded)	0
fillet radius	0	mm
hole diameter	6	mm

📦 Model #1082

1 object(s)

- format STL

Multi-compartment box STL 3D file: 4 compartments of 35×35×35 mm

This parametric storage box provides 4 cavities measuring 35×35×35mm each. External size of the box are 79×79×38mm. Fillets of 3mm applied to each compartment provide a better grip stored in the box. The walls are particularly thick.

Parameter	Value	Unit
number of rows	2
number of columns	2
compartment length	35	mm
compartment width	35	mm
compartment height	35	mm
wall thickness	3	mm
compartment fillet (radius)	3	mm

📦 Model #1014

1 object(s)

- format STL

O-ring STL file ID 5.3 × CS 2.4 mm

File of O-ring with dimensions ID (inner diameter) 5.3 mm / section thickness 2.4 mm. Outer diameter (OD) is 10.1 mm.

Parameter	Value	Unit
inner diameter (ID)	5.3	mm
cross section (CS)	2.4	mm

📦 Model #2964

1 object(s)

- format STL

Pipe elbow STL 3D file 1° ⌀OD: 52 mm ⌀ID: 46 mm thickness: 3 mm

3D file of a tubing elbow with a 1° angle in STL format. This elbow has an external diameter of 52 mm and an internal diameter of 46 mm. The tube thickness is therefore 3 mm. The ends feature fillets to make it easier to insert.

Parameter	Value	Unit
outer diameter	52	mm
inner diameter	46	mm
angle	1	°
end fillets	yes

📦 Model #1188

1 object(s)

- format STL

Tube adapter STL 3D file ⌀ 90–68 mm (Length: 90 mm)

Tube connector ⌀90 mm to ⌀68 mm in STL 3D format. Final length of this junction is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 15 mm, the smaller one of 30 mm. The two axes of the tubes are offset by 10 mm. The ends are not rounded.

Parameter	Value	Unit
side A length	15	mm
side A outer diameter	90	mm
side A thickness	2	mm
side B length	30	mm
side B outer diameter	68	mm
side B thickness	2	mm
transition length	45	mm
axis offset	10	mm
ends fillet	no fillet

📦 Model #2854

1 object(s)

- format STL

O-ring STL 3D file ID 26 × CS 0.2 mm

File of O-ring with dimensions Inner diameter 26 mm by section thickness 0.2 mm. External diameter (OD) resulting is 26.4 mm.

Parameter	Value	Unit
inner diameter (ID)	26	mm
cross section (CS)	0.2	mm

📦 Model #2966

1 object(s)

- format STL

Tube adapter STL 3D file ⌀ 200–80 mm (Length: 80 mm)

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

📦 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 #1156

2 object(s)

- format STL

Enclosure with screw-mounted lid STL file: 80×80×20 mm

Download this enclosure model with screwed lid in STL format. The dimensions are 80 mm long by 80 mm wide and 20 mm high. The lid only is 15 mm high. Wall thickness is 4 mm. The enclosure does not have cooling.

Parameter	Value	Unit
length	80	mm
width	80	mm
total height	20	mm
lid height	15	mm
wall thickness	4	mm
screw margin	0	mm
fit clearance	0.1	mm
cooling zone(s)	no cutouts

📦 Model #2861

3 object(s)

- format STL

Small parts organizer with 5 drawers 20×15×40 mm STL 3D file, thickness: 2 mm

Download this 3D model of a storage case in STL format. This model features 5 compartments, arranged in 1 rows and 5 columns. Practically speaking, this means 1 rows of 5 compartments. Each compartment offers a storage volume of 20 mm wide, 15 mm high, and 40 mm deep. The wall thickness is 2 mm. The compartments come with 1 divider each, which allows up to 2 compartments per compartment and up to 10 sections in total. The global dimensions of the box measure 134.5 x 21.5 x 46 mm. All the objects in this model were designed to be printable without support generation.

Parameter	Value	Unit
number of rows	1
number of columns	5
inner drawer depth	40	mm
inner drawer width	20	mm
inner drawer height	15	mm
wall thickness	2	mm
removable divider	one divider ...

📦 Model #3006

1 object(s)

- format STL

Shelf bracket 200×200 mm STL file, thickness 10 mm, hole diameter 8 mm

Download this file of a support bracket with a central reinforcement in STL 3D format. The dimensions are 200 mm in length, 200 mm in height, 25 mm in width, and 10 mm in thickness. The screw holes are designed with a diameter of 8 mm. Chamfers are applied to the holes to seat the screw heads. The central reinforcement bar reduces bending and provides two passages for screwdriver access. This bracket prints without support, placed flat directly on the build plate.

Parameter	Value	Unit
length	200	mm
height	200	mm
width	25	mm
thickness	10	mm
hole diameter	8	mm
chamfer on the holes	yes

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.