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Multi-compartment box STL 3D file: 4 compartments of 35×35×35 mm 📦 #1082

1 object(s) - format STL

gizmo

Latest model generated online:

Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 152×45 mm, thickness 3 mm 📦 #3349

1 object(s) - format STL

gizmo

From the blog

Modify 3D geometry in the slicer

2025-11-14 · 3D Modeling · sylvain
modify 3D geometry in the slicer modify 3D geometry in the slicer

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 #3065

1 object(s)
- format STL
Round air vent STL file ∅ 146 mm, slat angle: 30° with central reinforcement
Round air vent STL file ∅ 146 mm, slat angle: 30° with central reinforcement
Design of a round grille for air circulation in STL format. Its insertion diameter measures 146 mm. The slats have a slight angle of 30° and a low thickness of 1.4 mm. A centered vertical reinforcement secures the whole structure. This 3D vent grille has a flange of 8 mm. The total diameter of this model is 162 mm.
Parameter Value Unit
male diameter 146 mm
slat angle 30 °
slat thickness 1.4 mm
flange width 8 mm
central reinforcement yes

📦 Model #3253

1 object(s)
- format STL
O-ring STL 3D file ID 49 × CS 3.6 mm
O-ring STL 3D file ID 49 × CS 3.6 mm
STL model of circular seal with Internal diameter 49 mm / section thickness 3.6  mm. Outer diameter (OD) is therefore 56.2 mm.
Parameter Value Unit
inner diameter (ID) 49 mm
cross section (CS) 3.6 mm

📦 Model #2904

1 object(s)
- format STL
Support bracket 205×200 mm STL file, thickness 7 mm, hole diameter 7 mm
Support bracket 205×200 mm STL file, thickness 7 mm, hole diameter 7 mm
File of a support bracket reinforced in STL 3D format. The dimensions are 205 mm in length, 200 mm in height, 50 mm in width, and 7 mm in thickness. The holes have a diameter of 7 mm. Chamfers are applied to the holes for a cleaner fit of the screws. The reinforcing bar improves rigidity and provides two openings for fastening. This bracket prints without support, printed flat on the build plate.
Parameter Value Unit
length 205 mm
height 200 mm
width 50 mm
thickness 7 mm
hole diameter 7 mm
chamfer on the holes yes

📦 Model #2197

1 object(s)
- format STL
Tube adapter STL 3D file ⌀ 35–29 mm (Length: 55 mm)
Tube adapter STL 3D file ⌀ 35–29 mm (Length: 55 mm)
Inline tube reducer ⌀35 mm to ⌀29 mm in STL 3D format. Final length of this junction is 55 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 20 mm as well. The ends feature a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 29 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

📦 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 #3156

1 object(s)
- format STL
O-ring STL 3D file ID 70 × CS 10 mm
O-ring STL 3D file ID 70 × CS 10 mm
3D model of rubber ring with ID (inner diameter) 70 mm by thickness 10  mm. Outer diameter (OD, for outer diameter) is 90 mm.
Parameter Value Unit
inner diameter (ID) 70 mm
cross section (CS) 10 mm

📦 Model #1973

1 object(s)
- format STL
Tube adapter STL 3D file ⌀ 60–48 mm (Length: 45 mm)
Tube adapter STL 3D file ⌀ 60–48 mm (Length: 45 mm)
Inline tube adapter ⌀60 mm to ⌀48 mm in STL format. Final length of this sleeve is 45 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 10 mm, the smaller one of 20 mm. The ends are not rounded.
Parameter Value Unit
side A length 10 mm
side A outer diameter 60 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 48 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet no fillet

📦 Model #1075

1 object(s)
- format STL
Multi-compartment box STL file: 12 compartments of 15.5×15.5×30 mm
Multi-compartment box STL file: 12 compartments of 15.5×15.5×30 mm
This printable multi-compartment box features 12 slots measuring 15.5×15.5×30mm each. The total dimensions of the box are 107×37×32mm. The slots do not feature any fillet.
Parameter Value Unit
number of rows 2
number of columns 6
compartment length 15.5 mm
compartment width 15.5 mm
compartment height 30 mm
wall thickness 2 mm
compartment fillet (radius) 0 mm

📦 Model #2949

1 object(s)
- format STL
Container STL file, inner: base Ø60 mm, top Ø80 mm, height 42 mm - wall thickness 4 mm
Container STL file, inner: base Ø60 mm, top Ø80 mm, height 42 mm - wall thickness 4 mm
Download this 3D file of a bowl in STL 3D format. This model can be used for organizing small parts in a workshop or on a desk. The shape is flared, with a inner height of 42 mm, a inner diameter at the top of 80 mm, and a inner diameter at the bottom of 60 mm. The wall is particularly massive. The total height is 46 mm.
Parameter Value Unit
inner bottom diameter 60 mm
inner top diameter 80 mm
inner height 42 mm
wall thickness 4 mm

📦 Model #2975

1 object(s)
- format STL
Round-to-Rectangular Tube Adapter STL file ⌀68 mm to 47×66 mm, thickness 2 mm
Round-to-Rectangular Tube Adapter STL file ⌀68 mm to 47×66 mm, thickness 2 mm
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀68 mm and a rectangular section with internal dimensions 47×66 mm. The shell thickness is 2 mm and the overall length is 55 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 68 mm
cylinder inlet length 30 mm
rectangle internal length 47 mm
rectangle internal height 66 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 55 mm
thickness 2 mm
chamfer chamfers on ...

📦 Model #1156

2 object(s)
- format STL
Enclosure with screw-mounted lid STL file: 80×80×20 mm
Enclosure with screw-mounted lid STL file: 80×80×20 mm
View of object #0
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 #870

1 object(s)
- format STL
U-shaped handle STL 3D file 35×140×14 mm (Center-to-center 126 mm)
U-shaped handle STL 3D 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 section combined with a 90-degree transition. The openings are 6 mm diameter with a center-to-center distance of 126 mm.
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 6 mm

📦 Model #794

1 object(s)
- format STL
Cube STL 3D file 25×25×25 mm and 5 mm fillets
Cube STL 3D file 25×25×25 mm and 5 mm fillets
A 3D STL file of a cube. Its overall dimensions are 25×25×25 mm. A large fillet softens the edges.
Parameter Value Unit
length 25 mm
width 25 mm
height 25 mm
fillet radius 5 mm

📦 Model #3153

1 object(s)
- format STL
Multi-compartment box STL file: 12 compartments of 6×6×20 mm
Multi-compartment box STL file: 12 compartments of 6×6×20 mm
This STL file provides 12 cavities measuring 6×6×20mm each. The total dimensions are 39×30×23mm. A 2.1mm fillet applied to all compartments help with item retrieval stored in slots. The dividers are particularly robust.
Parameter Value Unit
number of rows 3
number of columns 4
compartment length 6 mm
compartment width 6 mm
compartment height 20 mm
wall thickness 3 mm
compartment fillet (radius) 2.1 mm

📦 Model #882

1 object(s)
- format STL
U-shaped handle STL file 35×140×14 mm (Center-to-center 126 mm)
U-shaped handle STL file 35×140×14 mm (Center-to-center 126 mm)
Download this STL 3D model of a U-shaped drawer handle. The external dimensions are 35×140×14 mm. The handle features a round section and a right-angled transition. The openings are 6 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) 1
transition (0:right,1:rounded) 0
fillet radius 0 mm
hole diameter 6 mm

📦 Model #3207

1 object(s)
- format STL
Tubing adapter STL 3D file ⌀ 154–133 mm (Length: 75 mm)
Tubing adapter STL 3D file ⌀ 154–133 mm (Length: 75 mm)
Straight sleeve ⌀154 mm to ⌀133 mm in STL 3D format. Length of this connector is 75 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 15 mm, the smaller one of 20 mm. The ends are rounded to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 15 mm
side A outer diameter 154 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 133 mm
side B thickness 2 mm
transition length 40 mm
axis offset 0 mm
ends fillet fillet on bo...

📦 Model #1287

1 object(s)
- format STL
Round air vent STL 3D file ∅ 150 mm, slat angle: 45°
Round air vent STL 3D file ∅ 150 mm, slat angle: 45°
3D design of a round air vent for air circulation in STL format. Its male diameter is 150 mm. The slats have an angle of 45° and a low thickness of 1.6 mm. This vent cover features a thin flange of 5 mm. The full diameter of the model is 160 mm.
Parameter Value Unit
male diameter 150 mm
slat angle 45 °
slat thickness 1.6 mm
flange width 5 mm
central reinforcement no

📦 Model #2930

1 object(s)
- format STL
O'ring STL 3D file ID 145 × CS 1 mm
O'ring STL 3D file ID 145 × CS 1 mm
STL model of circular seal with dimensions Inner diameter 145 mm × thickness 1  mm. The outer diameter is 147 mm.
Parameter Value Unit
inner diameter (ID) 145 mm
cross section (CS) 1 mm

📦 Model #2846

1 object(s)
- format STL
Corner bracket 250×250 mm STL 3D file, thickness 12 mm, hole diameter 5 mm
Corner bracket 250×250 mm STL 3D file, thickness 12 mm, hole diameter 5 mm
Download this file of a support bracket reinforced in STL format. The dimensions are 250 mm in length, 250 mm in height, 25 mm in width, and 12 mm in thickness. The mounting holes have a diameter of 5 mm. Chamfers are done to the holes for a cleaner fit of the screws. The central reinforcement bar reduces bending and provides two passages for fastening. This bracket prints without support, lying flat on the build plate.
Parameter Value Unit
length 250 mm
height 250 mm
width 25 mm
thickness 12 mm
hole diameter 5 mm
chamfer on the holes yes

📦 Model #1748

1 object(s)
- format STL
Round-to-Rectangular Tube Adapter STL file ⌀75 mm to 105×105 mm, thickness 3 mm
Round-to-Rectangular Tube Adapter STL file ⌀75 mm to 105×105 mm, thickness 3 mm
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀75 mm and a rectangular section with inner dimensions 105×105 mm. The shell thickness is 3 mm and the overall length is 80 mm.
Parameter Value Unit
cylinder outer diameter 75 mm
cylinder inlet length 30 mm
rectangle internal length 105 mm
rectangle internal height 105 mm
rectangle inlet length 19 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 3 mm
chamfer no chamfer

📦 Model #3184

1 object(s)
- format STL
Round air vent STL file ∅ 60 mm, slat angle: 10° with central reinforcement
Round air vent STL file ∅ 60 mm, slat angle: 10° with central reinforcement
3D design of a round vent cover for air circulation in STL format. Its male diameter is 60 mm. The slats have a slight angle of 10° and a high thickness of 2 mm. A central reinforcement reinforces the whole structure. This 3D vent grille has a prominent flange of 20 mm. The full diameter of the model is 100 mm.
Parameter Value Unit
male diameter 60 mm
slat angle 10 °
slat thickness 2 mm
flange width 20 mm
central reinforcement yes

📦 Model #3249

1 object(s)
- format STL
O'ring STL 3D file ID 28.5 × CS 3.6 mm
O'ring STL 3D file ID 28.5 × CS 3.6 mm
3D model of O-ring with Internal diameter 28.5 mm / CS (cross section) 3.6  mm. Outer diameter (OD, for outer diameter) is 35.7 mm.
Parameter Value Unit
inner diameter (ID) 28.5 mm
cross section (CS) 3.6 mm

📦 Model #2999

1 object(s)
- format STL
Round-to-Rectangular Tube Adapter STL file ⌀20 mm to 26×10 mm, thickness 2 mm
Round-to-Rectangular Tube Adapter STL file ⌀20 mm to 26×10 mm, thickness 2 mm
Download this 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 26×10 mm. The wall thickness is 2 mm and the total length is 50 mm.
Parameter Value Unit
cylinder outer diameter 20 mm
cylinder inlet length 10 mm
rectangle internal length 26 mm
rectangle internal height 10 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 2 mm
chamfer no chamfer

📦 Model #1271

1 object(s)
- format STL
Tube adapter STL file ⌀ 45–9 mm (Length: 90 mm)
Tube adapter STL file ⌀ 45–9 mm (Length: 90 mm)
Straight tube connector ⌀45 mm to ⌀9 mm in STL 3D format. Total length of this fitting is 90 mm. The larger-diameter tube has a thickness of 2.5 mm and a length of 30 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 30 mm as well. The ends are not rounded.
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 9 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet no fillet

📦 Model #888

1 object(s)
- format STL
U-shaped handle STL file 35×140×20 mm (Center-to-center 120 mm)
U-shaped handle STL file 35×140×20 mm (Center-to-center 120 mm)
Download this STL 3D file of a U-shaped handle. The overall dimensions are 35×140×20 mm. The handle features a square cross-section and a 90-degree transition. The openings are 6 mm diameter and have a 120 mm center-to-center distance.
Parameter Value Unit
width 35 mm
length 140 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 #2940

1 object(s)
- format STL
Round air vent STL file ∅ 100 mm, slat angle: 10° with central reinforcement
Round air vent STL file ∅ 100 mm, slat angle: 10° with central reinforcement
3D design of a round grille for ventilation in STL format. Its male diameter measures 100 mm. The slats have a slight angle of 10° and a low thickness of 1.4 mm. A vertical reinforcement secures the slats. This 3D vent grille features a thin flange of 3 mm. The total diameter of this model is 106 mm.
Parameter Value Unit
male diameter 100 mm
slat angle 10 °
slat thickness 1.4 mm
flange width 3 mm
central reinforcement yes

📦 Model #1483

1 object(s)
- format STL
Tube adapter STL file ⌀ 200–50 mm (Length: 80 mm)
Tube adapter STL file ⌀ 200–50 mm (Length: 80 mm)
Tube reducer ⌀200 mm to ⌀50 mm in STL 3D format. Total length of this junction 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 ends have no fillet.
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 50 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

📦 Model #1152

2 object(s)
- format STL
Enclosure with screw-mounted lid STL file: 70×40×25 mm
Enclosure with screw-mounted lid STL file: 70×40×25 mm
View of object #0
Download this enclosure with screwed lid in STL format. The dimensions are 70 mm long by 40 mm wide and 25 mm high. The cover only measures 10 mm high. Wall thickness is 3 mm. The enclosure does not have cooling.
Parameter Value Unit
length 70 mm
width 40 mm
total height 25 mm
lid height 10 mm
wall thickness 3 mm
screw margin 0 mm
fit clearance 0.1 mm
cooling zone(s) no cutouts

📦 Model #1861

1 object(s)
- format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀31 mm to 70×90 mm, thickness 2 mm
Round-to-Rectangular Tube Adapter STL 3D file ⌀31 mm to 70×90 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀31 mm and a rectangular section with inner dimensions 70×90 mm. The wall thickness is 2 mm and the overall length is 200 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 31 mm
cylinder inlet length 50 mm
rectangle internal length 70 mm
rectangle internal height 90 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer chamfers on ...

📦 Model #800

1 object(s)
- format STL
U-shaped handle STL file 35×100×10 mm (Center-to-center 90 mm)
U-shaped handle STL file 35×100×10 mm (Center-to-center 90 mm)
Download this STL 3D file of a basic U-shaped handle. The external dimensions are 35×100×10 mm. The handle features a square section and a straight transition. A fillet ensures a more pleasant grip. The holes are 5 mm diameter with a center-to-center distance of 90 mm.
Parameter Value Unit
width 35 mm
length 100 mm
thickness 10 mm
shape (0:square,1:circle) 0
transition (0:right,1:rounded) 0
fillet radius 1 mm
hole diameter 5 mm

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.