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U-shaped handle STL file 35×140×20 mm (Center-to-center 120 mm) 📦 #892

1 object(s) - format STL

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O-ring STL file ID 23.5 × CS 2.5 mm 📦 #3233

1 object(s) - format STL

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From the blog

A template to help you get organized

2025-09-22 · New templates · sylvain
a template to help you get organized a template to help you get organized

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 #1556

1 object(s)
- format STL
Tube adapter STL 3D file ⌀ 77–50 mm (Length: 125 mm)
Tube adapter STL 3D file ⌀ 77–50 mm (Length: 125 mm)
Inline tube adapter ⌀77 mm to ⌀50 mm in STL 3D format. Length of this sleeve is 125 mm. The thickness of the tubes is identical: 2.5 mm. The larger-diameter tube has a sleeve length of 45 mm, the smaller one of 40 mm. The two axes of the tubes are offset by 1 mm. The ends have a fillet on the outside.
Parameter Value Unit
side A length 45 mm
side A outer diameter 77 mm
side A thickness 2.5 mm
side B length 40 mm
side B outer diameter 50 mm
side B thickness 2.5 mm
transition length 40 mm
axis offset 1 mm
ends fillet fillet on th...

📦 Model #2958

1 object(s)
- format STL
Multi-compartment box STL file: 2 compartments of 15×10×25 mm
Multi-compartment box STL file: 2 compartments of 15×10×25 mm
This printable storage box features 2 sections measuring 15×10×25mm each. The total dimensions of the box are 19×26×27mm. Fillets of 2mm applied to all compartments help with item retrieval stored in the box.
Parameter Value Unit
number of rows 2
number of columns 1
compartment length 15 mm
compartment width 10 mm
compartment height 25 mm
wall thickness 2 mm
compartment fillet (radius) 2 mm

📦 Model #816

1 object(s)
- format STL
U-shaped handle STL file 35×100×14 mm (Center-to-center 86 mm)
U-shaped handle STL file 35×100×14 mm (Center-to-center 86 mm)
Download this STL 3D model of a simple U-shaped handle. The overall dimensions are 35×100×14 mm. The handle has a square section and a right-angled transition. The holes are 6 mm diameter with a center-to-center distance of 86 mm.
Parameter Value Unit
width 35 mm
length 100 mm
thickness 14 mm
shape (0:square,1:circle) 0
transition (0:right,1:rounded) 0
fillet radius 0 mm
hole diameter 6 mm

📦 Model #1188

1 object(s)
- format STL
Tube adapter STL 3D file ⌀ 90–68 mm (Length: 90 mm)
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 #2954

1 object(s)
- format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 50×50 mm, thickness 3 mm
Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 50×50 mm, thickness 3 mm
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
cylinder outer diameter 106 mm
cylinder inlet length 15 mm
rectangle internal length 50 mm
rectangle internal height 50 mm
rectangle inlet length 60 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer chamfer on t...

📦 Model #953

1 object(s)
- format STL
U-shaped handle STL 3D file 50×100×20 mm (Center-to-center 80 mm)
U-shaped handle STL 3D file 50×100×20 mm (Center-to-center 80 mm)
Download this 3D model of a simple U-shaped handle. The external dimensions are 50×100×20 mm. This handle has a circular profile and a straight transition. The bores are 5 mm diameter and have a 80 mm center-to-center distance.
Parameter Value Unit
width 50 mm
length 100 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 #1793

1 object(s)
- format STL
Tube adapter STL file ⌀ 66–41 mm (Length: 90 mm)
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 #2771

1 object(s)
- format STL
Washer / Flat Gasket STL file ⌀ID: 12 mm ⌀OD: 15 mm thickness: 2 mm
Washer / Flat Gasket STL file ⌀ID: 12 mm ⌀OD: 15 mm thickness: 2 mm
Model of washer / flat gasket in STL format. This model features an internal diameter of ⌀12 mm and an external diameter of ⌀15 mm. The thickness is 2 mm. There is no finish applied.
Parameter Value Unit
inner diameter 12 mm
outer diameter 15 mm
thickness 2 mm
finish none

📦 Model #3100

1 object(s)
- format STL
Honeycomb grid STL 3D file, 100x100mm, mesh: 3mm
Honeycomb grid STL 3D file, 100x100mm, mesh: 3mm
3D square protective honeycomb grid model as a STL file. The overall size is 100x100 mm, with extra fine 3 mm cell size for strong protection. This grid provides both mechanical protection and airflow.
Parameter Value Unit
length or center-to-center 100 mm
width or center-to-center 100 mm
mesh size 3 mm
dual color no
holes no

📦 Model #3054

1 object(s)
- format STL
Washer / Flat Gasket STL file ⌀ID: 19 mm ⌀OD: 21.9 mm thickness: 8 mm
Washer / Flat Gasket STL file ⌀ID: 19 mm ⌀OD: 21.9 mm thickness: 8 mm
Download this 3D model of flat gasket / washer in STL 3D file format. This part features an inner diameter of ⌀19 mm and an outer diameter of ⌀21.9 mm. The part thickness is 8 mm. No finish is available.
Parameter Value Unit
inner diameter 19 mm
outer diameter 21.9 mm
thickness 8 mm
finish none

📦 Model #1700

1 object(s)
- format STL
Washer / Flat Gasket STL file ⌀ID: 26 mm ⌀OD: 40 mm thickness: 8 mm + chamfers
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 #1888

2 object(s)
- format STL
Round box with lid STL 3D file ⌀ 80 mm - Height: 60 mm, Shell: 2 mm
Round box with lid STL 3D file ⌀ 80 mm - Height: 60 mm, Shell: 2 mm
View of object #0
Get this circular box in 3D STL format. Its diameter is 80 mm and its total height is 60 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 80 mm
total height 60 mm
wall thickness 2 mm
fit clearance 0.1 mm
inner bottom fillet 1 mm

📦 Model #2014

2 object(s)
- format STL
Small parts organizer with 4 drawers 40×40×40 mm STL file, thickness: 2 mm
Small parts organizer with 4 drawers 40×40×40 mm STL file, thickness: 2 mm
View of object #0
Download this file of a storage case in 3D STL format. This model features 4 boxes, arranged in 1 rows and 4 columns. Specifically, this means 1 rows of 4 boxes. Each box measures 40 mm wide, 40 mm high, and 40 mm deep. The wall thickness is 2 mm. The external dimensions of the structure measure 188 x 46.5 x 46 mm. All the objects in this model are intended to be printable without support.
Parameter Value Unit
number of rows 1
number of columns 4
inner drawer depth 40 mm
inner drawer width 40 mm
inner drawer height 40 mm
wall thickness 2 mm
removable divider none

📦 Model #2973

1 object(s)
- format STL
Mounting bracket 170×170 mm STL file, thickness 8 mm, hole diameter 8 mm
Mounting bracket 170×170 mm STL file, thickness 8 mm, hole diameter 8 mm
Download this model of a mounting bracket reinforced in STL format. The dimensions are 170 mm in length, 170 mm in height, 40 mm in width, and 8 mm in thickness. The mounting holes have a diameter of 8 mm. Chamfers are applied to the holes for a cleaner fit of the screws. The central reinforcement bar improves rigidity and provides two clearances for screwdriver access. No support is needed to print this bracket, printed flat on the build plate.
Parameter Value Unit
length 170 mm
height 170 mm
width 40 mm
thickness 8 mm
hole diameter 8 mm
chamfer on the holes yes

📦 Model #3064

1 object(s)
- format STL
Round air vent STL 3D file ∅ 146 mm, slat angle: 45° with central reinforcement
Round air vent STL 3D file ∅ 146 mm, slat angle: 45° with central reinforcement
3D design of a round grille for air circulation in STL format. Its male diameter is 146 mm. The slats have an angle of 45° and a low thickness of 1.4 mm. A centered vertical reinforcement secures the slats. This aeration grille features a collar of 8 mm. The total diameter of the model is 162 mm.
Parameter Value Unit
male diameter 146 mm
slat angle 45 °
slat thickness 1.4 mm
flange width 8 mm
central reinforcement yes

📦 Model #767

1 object(s)
- format STL
Rectangular prism STL file 100×44×55 mm
Rectangular prism STL file 100×44×55 mm
Download a rectangular prism as a 3D STL file. Its overall dimensions are 100 by 44 by 55 mm. A fillet is applied to all the model's edges.
Parameter Value Unit
length 100 mm
width 44 mm
height 55 mm
fillet radius 2 mm

📦 Model #951

1 object(s)
- format STL
U-shaped handle STL 3D file 50×100×20 mm (Center-to-center 80 mm)
U-shaped handle STL 3D file 50×100×20 mm (Center-to-center 80 mm)
Download this STL 3D model of a simple U-shaped furniture handle. The overall dimensions are 50×100×20 mm. The handle has a square section combined with a softened transition. A light fillet allows for a more pleasant grip. The bores are 6 mm diameter with a center-to-center distance of 80 mm.
Parameter Value Unit
width 50 mm
length 100 mm
thickness 20 mm
shape (0:square,1:circle) 0
transition (0:right,1:rounded) 1
fillet radius 1 mm
hole diameter 6 mm

📦 Model #2928

1 object(s)
- format STL
Tubing elbow STL file 115° ⌀OD: 47 mm ⌀ID: 44 mm thickness: 1.5 mm
Tubing elbow STL file 115° ⌀OD: 47 mm ⌀ID: 44 mm thickness: 1.5 mm
3D model of a tubing elbow with a 115° angle in STL format. This pipe elbow has an outer diameter of 47 mm and an inner diameter of 44 mm. The tube thickness is therefore 1.5 mm.
Parameter Value Unit
outer diameter 47 mm
inner diameter 44 mm
angle 115 °
end fillets no

📦 Model #787

1 object(s)
- format STL
Rectangular prism STL file 15×40×100 mm
Rectangular prism STL file 15×40×100 mm
A STL 3D model of a box. The final dimensions are 15×40×100 mm. A small fillet softens all the edges.
Parameter Value Unit
length 15 mm
width 40 mm
height 100 mm
fillet radius 2 mm

📦 Model #3109

1 object(s)
- format STL
Washer / Flat Gasket STL file ⌀ID: 19 mm ⌀OD: 29 mm thickness: 2 mm
Washer / Flat Gasket STL file ⌀ID: 19 mm ⌀OD: 29 mm thickness: 2 mm
File of gasket / washer in STL file format. This model features an inner diameter of ⌀19 mm and an outer diameter of ⌀29 mm. The thickness is 2 mm. No finish is available.
Parameter Value Unit
inner diameter 19 mm
outer diameter 29 mm
thickness 2 mm
finish none

📦 Model #1982

1 object(s)
- format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀110 mm to 200×120 mm, thickness 2 mm
Round-to-Rectangular Tube Adapter STL 3D file ⌀110 mm to 200×120 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀110 mm and a rectangular section with internal dimensions 200×120 mm. The shell thickness is 2 mm and the overall length is 260 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 110 mm
cylinder inlet length 50 mm
rectangle internal length 200 mm
rectangle internal height 120 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 260 mm
thickness 2 mm
chamfer chamfers on ...

📦 Model #1092

1 object(s)
- format STL
Box STL file with dimensions 100×100×60 mm
Box STL file with dimensions 100×100×60 mm
This box design offers a single compartment measuring 100×100×60mm. The total dimensions are 108×108×64mm. The fillet of 2mm helps with item retrieval inside the compartment. The separators are particularly reinforced.
Parameter Value Unit
number of rows 1
number of columns 1
compartment length 100 mm
compartment width 100 mm
compartment height 60 mm
wall thickness 4 mm
compartment fillet (radius) 2 mm

📦 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
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 #2390

1 object(s)
- format STL
Round air vent STL 3D file ∅ 115 mm, slat angle: 45°
Round air vent STL 3D file ∅ 115 mm, slat angle: 45°
3D file of a round grille for air circulation in STL format. Its male diameter is 115 mm. The slats have an angle of 45° and a high thickness of 2 mm. This ventilation grille has a collar of 10 mm. The full diameter of this model is 135 mm.
Parameter Value Unit
male diameter 115 mm
slat angle 45 °
slat thickness 2 mm
flange width 10 mm
central reinforcement no

📦 Model #3122

1 object(s)
- format STL
Honeycomb grille STL 3D file, center-to-center: 180x180mm, mesh: 10mm - Ø3mm
Honeycomb grille STL 3D file, center-to-center: 180x180mm, mesh: 10mm - Ø3mm
3D square protective honeycomb grid model in STL format. Mounting holes are placed at the four corners (center-to-center 180x180 mm), each with a diameter of Ø3 mm. The overall dimensions reach 186x186 mm, with very open 10 mm cell size for peak ventilation. This grid functions as both a mechanical guard and a ventilation panel.
Parameter Value Unit
length or center-to-center 180 mm
width or center-to-center 180 mm
mesh size 10 mm
dual color no
holes yes
hole diameter 3 mm

📦 Model #1005

1 object(s)
- format STL
U-shaped handle STL 3D file 50×140×20 mm (Center-to-center 120 mm)
U-shaped handle STL 3D file 50×140×20 mm (Center-to-center 120 mm)
Download this STL file of a U-shaped furniture handle. The overall dimensions are 50×140×20 mm. The handle features a square profile combined with a softened transition. A light fillet produces a softer grip. The bores are 6 mm diameter with a center-to-center distance of 120 mm.
Parameter Value Unit
width 50 mm
length 140 mm
thickness 20 mm
shape (0:square,1:circle) 0
transition (0:right,1:rounded) 1
fillet radius 1 mm
hole diameter 6 mm

📦 Model #2803

1 object(s)
- format STL
Right-angle bracket 180×180 mm STL file, thickness 5 mm, hole diameter 5 mm
Right-angle bracket 180×180 mm STL file, thickness 5 mm, hole diameter 5 mm
Download this 3D model of an angle bracket with a central reinforcement in STL 3D format. The dimensions are 180 mm in length, 180 mm in height, 50 mm in width, and 5 mm in thickness. The mounting holes are designed with a diameter of 5 mm. Chamfers are applied to the holes for a cleaner fit of the screws. The reinforcing bar improves rigidity and includes two openings for screwdriver access. This bracket prints without support, lying flat directly on the build plate.
Parameter Value Unit
length 180 mm
height 180 mm
width 50 mm
thickness 5 mm
hole diameter 5 mm
chamfer on the holes yes

📦 Model #3079

1 object(s)
- format STL
Shelf bracket 200×200 mm STL file, thickness 5 mm, hole diameter 5 mm
Shelf bracket 200×200 mm STL file, thickness 5 mm, hole diameter 5 mm
File of a right-angle 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 5 mm in thickness. The mounting holes have a diameter of 5 mm. Chamfers are applied to the holes to improve the seating of the heads. The reinforcing bar reduces bending and includes two clearances for fastening. No support is needed to print this bracket, placed flat on the build plate.
Parameter Value Unit
length 200 mm
height 200 mm
width 25 mm
thickness 5 mm
hole diameter 5 mm
chamfer on the holes yes

📦 Model #1138

2 object(s)
- format STL
Enclosure with screw-mounted lid STL file: 100×60×30 mm (with ventilation on the lid and under the enclosure)
Enclosure with screw-mounted lid STL file: 100×60×30 mm (with ventilation on the lid and under the enclosure)
View of object #0
Download this enclosure with lid in 3D STL format. The dimensions are 100 mm long by 60 mm wide and 30 mm high. The cover is 15 mm high. Wall thickness is 3 mm. This enclosure has significant cooling area on the lid and under the base.
Parameter Value Unit
length 100 mm
width 60 mm
total height 30 mm
lid height 15 mm
wall thickness 3 mm
screw margin 0.4 mm
fit clearance 0.2 mm
cooling level 5
cooling zone(s) cutouts on b...

📦 Model #1387

1 object(s)
- format STL
Tube adapter STL 3D file ⌀ 155–90 mm (Length: 90 mm)
Tube adapter STL 3D file ⌀ 155–90 mm (Length: 90 mm)
Inline tube adapter ⌀155 mm to ⌀90 mm in STL 3D 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 20 mm, the smaller one of 50 mm. The ends are rounded on the outside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 155 mm
side A thickness 2 mm
side B length 50 mm
side B outer diameter 90 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

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.