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Pipe elbow STL 3D file 180° ⌀OD: 20 mm ⌀ID: 16 mm thickness: 2 mm

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

Multi-compartment box STL 3D file: 14 compartments of 14×14×5 mm

Multi-compartment box STL file: 48 compartments of 20×20×20 mm

Clip-on pipe holder Ø40 mm STL 3D file · Pan head screw Ø5 mm

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

Pot STL 3D file, inner: base Ø100 mm, top Ø100 mm, height 40 mm - wall thickness 6 mm

Protective grid STL file, center-to-center: 105x105mm, mesh: 4mm - Ø4mm

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

Tube adapter STL file ⌀ 100–51 mm (Length: 160 mm)

The easiest way to get custom 3D files!

Featured Model

Enclosure with screw-mounted lid STL file: 80×80×20 mm 📦 #1156

2 object(s) - format STL

Latest model generated online:

Angle bracket 120×110 mm STL 3D file, thickness 6 mm, hole diameter 6 mm 📦 #3836

1 object(s) - format STL

From the blog

Modify 3D geometry in the slicer

2025-11-14 · 3D Modeling · sylvain

Editing 3D geometry without CAD software is absolutely possible!

In this article, you’ll learn how to tweak your models directly in your slicer. It’s the perfect approach when the generated model is almost right but still needs a small adjustment.

You’ll see how to rescale a part, work axis by axis, and even compensate for a missing step size in the template, with concrete examples like the honeycomb grid and snap-on pipe clip holders.

We’ll also look at the slicer’s advanced editing tools: adding volumes, subtracting geometry, embossed or debossed text, and custom holes — all simple operations that let you adapt an existing STL with zero CAD skills.

A practical, quick, and handy guide to personalize your prints in just a few clicks!

Read the article

A selection of custom 3D models

📦 Model #1954

2 object(s)

- format STL

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

File of a storage box with drawers in 3D STL format. This model includes 4 compartments, arranged in 1 rows and 4 columns. In detail, this means 1 rows of 4 compartments. Each compartment has usable dimensions of 20 mm wide, 80 mm high, and 80 mm deep. The wall thickness is 2 mm. The global dimensions of the structure come to 108 x 86.5 x 86 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	80	mm
inner drawer width	20	mm
inner drawer height	80	mm
wall thickness	2	mm
removable divider	none

📦 Model #1951

1 object(s)

- format STL

O'ring STL file ID 36.4 × CS 2.6 mm

3D model of O-ring with Internal diameter 36.4 mm by CS 2.6 mm. External diameter (OD) resulting is 41.6 mm.

Parameter	Value	Unit
inner diameter (ID)	36.4	mm
cross section (CS)	2.6	mm

📦 Model #1937

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 120×100 mm, thickness 2 mm + offset

Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀300 mm and a rectangular section with inner dimensions 120×100 mm. The wall thickness is 2 mm and the total length is 300 mm. The adapter has an offset of 40 mm along the Y axis and 40 mm along the Z axis.

Parameter	Value	Unit
cylinder outer diameter	300	mm
cylinder inlet length	100	mm
rectangle internal length	120	mm
rectangle internal height	100	mm
rectangle inlet length	100	mm
offset Z	40	mm
offset Y	40	mm
total length	300	mm
thickness	2	mm
chamfer	no chamfer

📦 Model #1916

1 object(s)

- format STL

Round air vent STL 3D file ∅ 96.5 mm, slat angle: 10° with central reinforcement

3D design of a round vent cover for ventilation in STL format. Its male diameter measures 96.5 mm. The slats have a slight angle of 10° and a high thickness of 2 mm. A vertical reinforcement reinforces the slats. This ventilation grille features a collar of 10 mm. The total diameter of this model is 116.5 mm.

Parameter	Value	Unit
male diameter	96.5	mm
slat angle	10	°
slat thickness	2	mm
flange width	10	mm
central reinforcement	yes

📦 Model #3558

1 object(s)

- format STL

Honeycomb grid STL file, 200x200mm, mesh: 3mm

Honeycomb square grid model in STL format. The overall size is 200x200 mm, with fine 3 mm cell size for maximum protection. This grid acts as a protective guard while allowing airflow.

Parameter	Value	Unit
length or center-to-center	200	mm
width or center-to-center	200	mm
mesh size	3	mm
dual color	no
holes	no

📦 Model #3567

1 object(s)

- format STL

Tube clip holder Ø22 mm STL file · Round head screw Ø4 mm

Download this 3D file of a Ø22 mm pipe clip mount in STL format. The installation is designed by means of a pan head screw Ø4 mm. This snap-on pipe clip is built for a secure hold with easy setup.

Parameter	Value	Unit
tube diameter	22	mm
hole diameter	4	mm
countersunk screw	no

📦 Model #1921

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL file ⌀32 mm to 55.1×20 mm, thickness 2 mm

Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀32 mm and a rectangular section with inner dimensions 55.1×20 mm. The wall thickness is 2 mm and the overall length is 55 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	32	mm
cylinder inlet length	15	mm
rectangle internal length	55.1	mm
rectangle internal height	20	mm
rectangle inlet length	15	mm
offset Z	0	mm
offset Y	0	mm
total length	55	mm
thickness	2	mm
chamfer	chamfers on ...

📦 Model #3565

2 object(s)

- format STL

Round box with lid STL 3D file ⌀ 30 mm - Height: 160 mm, Shell: 3 mm

Get this cylindrical storage box in 3D STL format. Its diameter is 30 mm and its height is 160 mm. The wall thickness is 3 mm. A fillet located at the bottom of the box makes it easier to grab objects.

Parameter	Value	Unit
external diameter	30	mm
total height	160	mm
wall thickness	3	mm
fit clearance	0.1	mm
inner bottom fillet	2	mm

📦 Model #1959

1 object(s)

- format STL

Tube adapter STL file ⌀ 183–90 mm (Length: 117 mm)

Tube adapter ⌀183 mm to ⌀90 mm in STL 3D format. Length of this sleeve is 117 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 50 mm, the smaller one of 17 mm. The ends are not rounded.

Parameter	Value	Unit
side A length	50	mm
side A outer diameter	183	mm
side A thickness	3	mm
side B length	17	mm
side B outer diameter	90	mm
side B thickness	3	mm
transition length	50	mm
axis offset	0	mm
ends fillet	no fillet

📦 Model #1924

1 object(s)

- format STL

Tube adapter STL 3D file ⌀ 16–9 mm (Length: 40 mm)

Inline tube junction ⌀16 mm to ⌀9 mm in STL format. Final length of this coupler is 40 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 10 mm, the smaller one of 10 mm as well. The axes of the tubes are offset by 3.1 mm. The ends are not rounded.

Parameter	Value	Unit
side A length	10	mm
side A outer diameter	16	mm
side A thickness	2	mm
side B length	10	mm
side B outer diameter	9	mm
side B thickness	2	mm
transition length	20	mm
axis offset	3.1	mm
ends fillet	no fillet

📦 Model #3561

2 object(s)

- format STL

Round box with lid STL 3D file ⌀ 145 mm - Height: 70 mm, Shell: 2 mm

Download this cylindrical box in STL format. Its diameter is 145 mm and its height is 70 mm. The wall thickness is 2 mm.

Parameter	Value	Unit
external diameter	145	mm
total height	70	mm
wall thickness	2	mm
fit clearance	0.1	mm
inner bottom fillet	0	mm

📦 Model #1915

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL 3D file ⌀180 mm to 180×50 mm, thickness 3 mm

Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀180 mm and a rectangular section with inner dimensions 180×50 mm. The wall thickness is 3 mm and the overall length is 250 mm.

Parameter	Value	Unit
cylinder outer diameter	180	mm
cylinder inlet length	80	mm
rectangle internal length	180	mm
rectangle internal height	50	mm
rectangle inlet length	50	mm
offset Z	0	mm
offset Y	0	mm
total length	250	mm
thickness	3	mm
chamfer	no chamfer

📦 Model #1904

1 object(s)

- format STL

Box STL file with dimensions 64.8×64.8×52 mm

This printable mono-compartment box features a single compartment measuring 64.8×64.8×52mm. Overall dimensions of the box are 68.8×68.8×54mm.

Parameter	Value	Unit
number of rows	1
number of columns	1
compartment length	64.8	mm
compartment width	64.8	mm
compartment height	52	mm
wall thickness	2	mm
compartment fillet (radius)	1	mm

📦 Model #1942

1 object(s)

- format STL

Tube adapter STL file ⌀ 45–40 mm (Length: 65 mm)

Tube adapter ⌀45 mm to ⌀40 mm in STL format. Total length of this coupler is 65 mm. The thickness of the tubes is identical: 2.5 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have no fillet.

Parameter	Value	Unit
side A length	30	mm
side A outer diameter	45	mm
side A thickness	2.5	mm
side B length	30	mm
side B outer diameter	40	mm
side B thickness	2.5	mm
transition length	5	mm
axis offset	0	mm
ends fillet	no fillet

📦 Model #3566

1 object(s)

- format STL

Protective grid STL file, center-to-center: 106x106mm, mesh: 10mm - Ø5mm

3D fan guard model as a STL file. Mounting holes are placed at the four corners (center-to-center 106x106 mm), each with a diameter of Ø5 mm. The overall dimensions reach 116x116 mm, with very open 10 mm cell size for maximum airflow. This grid serves as both a protective guard and a ventilation panel.

Parameter	Value	Unit
length or center-to-center	106	mm
width or center-to-center	106	mm
mesh size	10	mm
dual color	no
holes	yes
hole diameter	5	mm

📦 Model #1935

1 object(s)

- format STL

O-ring STL file ID 43.8 × CS 5.4 mm

3D model of rubber ring with dimensions ID 43.8 mm × section thickness 5.4 mm. Final diameter is therefore 54.6 mm.

Parameter	Value	Unit
inner diameter (ID)	43.8	mm
cross section (CS)	5.4	mm

📦 Model #1932

1 object(s)

- format STL

Tube adapter STL file ⌀ 240–106 mm (Length: 160 mm)

Straight tube connector ⌀240 mm to ⌀106 mm in STL format. Length of this fitting is 160 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 70 mm, the smaller one of 70 mm as well. The ends are raw.

Parameter	Value	Unit
side A length	70	mm
side A outer diameter	240	mm
side A thickness	3	mm
side B length	70	mm
side B outer diameter	106	mm
side B thickness	3	mm
transition length	20	mm
axis offset	0	mm
ends fillet	no fillet

📦 Model #1908

2 object(s)

- format STL

Round box with lid STL 3D file ⌀ 132 mm - Height: 75 mm, Shell: 2 mm

Get this round storage box in 3D STL format. Its diameter is 132 mm and its total height is 75 mm. The wall thickness is 2 mm.

Parameter	Value	Unit
external diameter	132	mm
total height	75	mm
wall thickness	2	mm
fit clearance	0.1	mm
inner bottom fillet	0	mm

📦 Model #3553

1 object(s)

- format STL

Clip-on tube support Ø25 mm STL file · Countersunk screw Ø3 mm

3D model of a Ø25 mm pipe clip mount in STL format. The fastening is performed by means of a flat head screw Ø3 mm. This pipe support clip is intended for a secure hold and quick installation.

Parameter	Value	Unit
tube diameter	25	mm
hole diameter	3	mm
countersunk screw	yes

📦 Model #1912

1 object(s)

- format STL

Round air vent STL 3D file ∅ 100 mm, slat angle: 60° with central reinforcement

3D design of a round grille for ventilation in STL format. Its insertion diameter is 100 mm. The slats have a steep angle of 60° and a high thickness of 2.4 mm. A central reinforcement reinforces the whole structure. This ventilation grille features a flange of 10 mm. The total diameter of the model is 120 mm.

Parameter	Value	Unit
male diameter	100	mm
slat angle	60	°
slat thickness	2.4	mm
flange width	10	mm
central reinforcement	yes

📦 Model #3562

1 object(s)

- format STL

Honeycomb grid STL 3D file, 150x150mm, mesh: 3mm

Download this 3D honeycomb protective square grid file in STL format. The overall size is 150x150 mm, with fine 3 mm cell size for high protection. This grid acts as a protective guard while allowing airflow.

Parameter	Value	Unit
length or center-to-center	150	mm
width or center-to-center	150	mm
mesh size	3	mm
dual color	no
holes	no

📦 Model #3563

1 object(s)

- format STL

Honeycomb grid STL 3D file, 300x150mm, mesh: 10mm

3D rectangular grid file in STL format. The overall size is 300x150 mm, with very open 10 mm cell size for peak ventilation. This type of grid serves both protection and ventilation roles.

Parameter	Value	Unit
length or center-to-center	300	mm
width or center-to-center	150	mm
mesh size	10	mm
dual color	no
holes	no

📦 Model #3570

1 object(s)

- format STL

Tube clip holder Ø31 mm STL 3D file · Countersunk screw Ø3 mm

3D model of a Ø31 mm snap-on tube holder in STL format. The fastening is done by means of a flat head screw Ø3 mm. This snap-on tube holder is designed for a secure hold with easy setup.

Parameter	Value	Unit
tube diameter	31	mm
hole diameter	3	mm
countersunk screw	yes

📦 Model #1913

1 object(s)

- format STL

Round-to-Rectangular Tube Adapter STL file ⌀102 mm to 80×9 mm, thickness 5 mm + offset

3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀102 mm and a rectangular section with inner dimensions 80×9 mm. The wall thickness is 5 mm and the overall length is 100 mm. The adapter has an offset of 21.5 mm along the Z axis. 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	102	mm
cylinder inlet length	7	mm
rectangle internal length	80	mm
rectangle internal height	9	mm
rectangle inlet length	50	mm
offset Z	21.5	mm
offset Y	0	mm
total length	100	mm
thickness	5	mm
chamfer	chamfers on ...

📦 Model #1925

1 object(s)

- format STL

Tube adapter STL file ⌀ 15–9 mm (Length: 40 mm)

Tube adapter ⌀15 mm to ⌀9 mm in STL 3D format. Total length of this adapter is 40 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 10 mm, the smaller one of 10 mm as well. The two axes of the tubes are offset by 2.9 mm. The ends are not rounded.

Parameter	Value	Unit
side A length	10	mm
side A outer diameter	15	mm
side A thickness	2	mm
side B length	10	mm
side B outer diameter	9	mm
side B thickness	2	mm
transition length	20	mm
axis offset	2.9	mm
ends fillet	no fillet

📦 Model #3557

1 object(s)

- format STL

Multi-compartment box STL 3D file: 25 compartments of 60×50×30 mm

This printable multi-compartment box includes 25 slots measuring 60×50×30mm each. The total dimensions are 312×262×32mm.

Parameter	Value	Unit
number of rows	5
number of columns	5
compartment length	60	mm
compartment width	50	mm
compartment height	30	mm
wall thickness	2	mm
compartment fillet (radius)	1	mm

📦 Model #3559

1 object(s)

- format STL

Tube adapter STL 3D file ⌀ 70–25 mm (Length: 50 mm)

Inline tube adapter ⌀70 mm to ⌀25 mm in STL 3D format. Total length of this sleeve is 50 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 8 mm, the smaller one of 20 mm. The ends are not rounded.

Parameter	Value	Unit
side A length	8	mm
side A outer diameter	70	mm
side A thickness	2	mm
side B length	20	mm
side B outer diameter	25	mm
side B thickness	2	mm
transition length	22	mm
axis offset	0	mm
ends fillet	no fillet

📦 Model #1928

1 object(s)

- format STL

Tube adapter STL 3D file ⌀ 94–80 mm (Length: 80 mm)

Inline sleeve ⌀94 mm to ⌀80 mm in STL 3D format. Total length of this coupler 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 50 mm. The axes of the tubes are off-center by 5.9 mm. The ends are rounded on the outside.

Parameter	Value	Unit
side A length	20	mm
side A outer diameter	94	mm
side A thickness	2	mm
side B length	50	mm
side B outer diameter	80	mm
side B thickness	2	mm
transition length	10	mm
axis offset	5.9	mm
ends fillet	fillet on th...

📦 Model #3560

2 object(s)

- format STL

Enclosure with screw-mounted lid STL file: 180×120×100 mm

Download this enclosure model with screwed lid in STL format. The dimensions are 180 mm long by 120 mm wide and 100 mm high. The lid only is 20 mm high. Wall thickness is 3 mm. The enclosure does not feature cooling.

Parameter	Value	Unit
length	180	mm
width	120	mm
total height	100	mm
lid height	20	mm
wall thickness	3	mm
screw margin	0	mm
fit clearance	0.1	mm
cooling zone(s)	no cutouts

📦 Model #1909

1 object(s)

- format STL

Pipe elbow STL file 60° ⌀OD: 50 mm ⌀ID: 40.5 mm thickness: 4.75 mm

3D model of an elbow with a 60° angle in STL format. This elbow has an external diameter of 50 mm and an internal diameter of 40.5 mm. This results in a tube thickness of 4.75 mm.

Parameter	Value	Unit
outer diameter	50	mm
inner diameter	40.5	mm
angle	60	°
end fillets	no

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.