18 mm 3D Models

Find the best 18 mm 3D Models, free download in STL, FBX, GLB, OBJ, 3MF, USDZ for 3D modeling and creation in Blender, 3D printing, game developing, animation, eCommerce, AR/VR and etc. Generated by Tripo AI 3D Generator.

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Dimensions:
- Length: 225 mm
- Width: 41 mm
- Height: 57 mm
- Wall thickness: 3 mm

Design:
- Smooth ergonomic curved shape
- Rounded edges

Back side:
- Include two end hooks:
1. Front hook:
- Length: 20 mm
- Thickness: 6 mm
- J-shaped
2. Rear hook:
- Length: 18 mm
- Thickness: 5 mm
- Slight curve

Anonymous1767181802

Un filtro plastico en forma de cilindro conico con una altura de 43 milimetros de alto y un diametro superior de 18 milimetros y diametro inferior 16 milimetros. El grueso de la pared interior es de 1 milimetro. A partir del milimetro 3, genera perforaciones de un milimetro de diametro en la pared del filtro, incluyendo la base.

Anonymous1721772723

Create a trapezoidal flat panel with uniform thickness of 1 mm.
- Top width: 80 mm
- Bottom width: 50 mm
- Height: 33 mm
- Shape: trapezoid with slightly inclined sides, rounded bottom corners (radius ~3 mm).
- Central cutout: rectangular opening, 23 mm wide × 18 mm high, centered, with chamfered corners (0.5 mm chamfer).
- Chamfers: apply 0.5 mm chamfers to external edges for smooth finish.
- Clips (presilhas): four identical clips positioned symmetrically at each corner. Each clip shaped like a small hook (similar to the side-view reference provided), dimensions approx. 3 mm × 5 mm base, 1 mm height, aligned flush with the panel surface.
- Ensure perfect symmetry left-right and top-bottom.
- Export the model in STL format, watertight and manifold, ready for 3D printing.

Anonymous1775327309

Anonymous1773840594

A 3D printable air vent manifold for FDM printing.

The model consists of:
- A flat rectangular base plate, 150 mm long, 25 mm wide and 6 mm thick, made to be screwed onto a surface. The base has 4 countersunk mounting holes (4.5 mm diameter, suitable for M4 screws) . one on each corner.
- Five adjustable air outlet nozzles evenly spaced along the 150 mm length, connected to the base via a functional ball-and-socket joint.
- Each nozzle is a short cylindrical duct, 28 mm long, 22 mm outer diameter, 18 mm inner diameter, with rounded edges for smooth airflow.
- optimized for 3D printing

Anonymous1774454611

Genera un archivo STL de una manivela mecánica para girar un eje de 6 mm.

Dimensiones:
- Longitud total: 120 mm
- Mango giratorio: cilindro de 18 mm de largo y 12 mm de diámetro
- Brazo de la manivela: 100 mm de largo, 12 mm de ancho, 6 mm de grosor

Agujero para eje:
- Diámetro: 6.1 mm
- Ubicado en un extremo del brazo

Mango:
- Conectado mediante un perno cilíndrico de 4 mm de diámetro
- El mango debe girar libremente

Exporta como STL listo para impresión 3D.

Anonymous1773029209

Create a precise 3D model of a napkin holder with a clean double-arch shape (like a wooden napkin holder), dimensions 180x60x80 mm. Include a centered straight slot (18 mm wide) along the length. Use uniform wall thickness 4 mm and a perfectly flat bottom for stability.

IMPORTANT: keep the overall shape smooth, symmetric, and undeformed.

Apply a strong crumpled paper texture ONLY as exterior surface detail. Texture depth 1–1.5 mm, with large soft folds and rounded creases, no sharp spikes, holes, or thin features. Texture must not affect edges or base.

Interior surfaces must be completely smooth. Model must be solid, watertight, and printable without supports.

Anonymous1768985798

make me a object 6cm in width 6 in length and 8 in hight with a 13.2x19.4 mm hole at the side and a usb c hole at the bottom and at the top a circular hole mesuaring 18 mm in circumferance also make the top and bootom removable without glueing

Anonymous1773515552

Create a clean manufacturable 3D model of a small square board game tile designed for FDM 3D printing. Tile size 18 mm x 18 mm with 1 mm corner radius and total thickness 2.4 mm. The top surface contains an engraved steampunk mechanical riveted cross symbol. Engraving depth 0.6 mm. The symbol consists of a central circular hub diameter 4.2 mm with four rectangular arms extending symmetrically toward the four edges. Each arm is 3 mm wide with slightly rounded ends. Add one circular rivet indentation near the end of each arm, diameter 1.2 mm. Leave a flat border around the tile edge of 0.8 mm. Geometry must be simple and optimized for FDM printing: minimum feature width 1 mm, smooth edges, no tiny details, no sharp thin points, continuous surfaces where possible, no overhangs. The tile must be solid, manifold, watertight, printable with a 0.4 mm nozzle. Units in millimeters. Export as a single clean STL mesh.

Anonymous1771427598

Create a hollow ellipsoid dome.

Outer size:
280 x 180 x 65 mm

Wall thickness:
1 mm

Cut a circular hole in the bottom:
115 mm diameter

Add a ring base:
130 mm outer diameter
115 mm inner diameter
18 mm height

Anonymous1765295526

A circular container base, deep red color, matching a cookie tin. Inside, it features a white plastic divider with 5 scalloped triangular compartments arranged in a star pattern. The walls are thin but sturdy for 3D printing. Flat bottom, 1:1 scale with the lidad cookie container.
Shape: circular biscuit with realistic shortbread texture on top surface.
Diameter: 80 mm.
Thickness: 18 mm.

On the center, create a square mechanical keyboard switch socket:
- 14 mm x 14 mm square hole
- Depth 10 mm
- Compatible with standard MX switch
- Include 2 small wire holes (2 mm diameter) going through the bottom

Bottom side:
- Flat base for stable desk placement
- Wall thickness 2.5 mm
- Hollow interior to reduce material
- Snap-fit bottom cover

Make the model optimized for FDM 3D printing:
- No extreme overhangs
- Clean solid mesh
- Export-ready STL

Anonymous1772246054

PART 1 – C-SHAPED BODY

Total height: 60 mm

Width: 35 mm

Depth: 45 mm

Internal opening gap: 30 mm

Upper and lower arm thickness: 8 mm

At the center of the upper arm, create a vertical threaded bore:

ISO Metric Thread M10 x 1.5

Internal thread length: 22 mm

Radial clearance: 0.1 mm

Real helical thread geometry (not cosmetic)

Compensate 0.5% shrinkage for resin printing

Bottom arm:

Flat circular contact pad

Diameter: 18 mm

Depth: 2 mm

Fillets:

Internal corners radius 2 mm

Minimum wall thickness: 2 mm

Anonymous1771729171

3D printable yarn bowl designed specifically for PLA printing. Outer diameter 190 mm, height 120 mm. Wall thickness 11–12 mm for structural strength. Smooth hemispherical interior cavity with 165 mm inner diameter. One large S-shaped spiral yarn slot cut from the top rim downward, with wide opening (minimum 18 mm slot width) and fully rounded edges (6 mm fillet radius) to prevent stress concentration and cracking in PLA. The spiral should not create thin weak sections — maintain at least 10 mm material thickness around the cutout.

Two vertical cylindrical through-holes (9 mm diameter) placed beside the spiral slot for knitting needles. Bottom thickness minimum 12 mm for weight and stability.

Slight outward bottom flare (5 degree angle) for better bed adhesion and stability.

Fully manifold solid mesh, no thin walls, no sharp internal corners, optimized for FDM printing without support. High resolution STL-ready geometry.

Anonymous1768065171

This is a dimensioned isometric drawing of a mechanical linkage bracket.
It has a top right cylindrical boss (Ø50 outer, Ø25 hole, 46 mm thick) mounted 70 mm above the base. On the left, a forked joint has two lugs (Ø36 outer, Ø15 hole), each 15 mm thick, with an 18 mm gap between them. The connecting arm lengths are 30 mm, 18 mm, and 12 mm, with a 36 mm vertical section.

A vertical support of 50 mm width and 18 mm thickness connects to the bottom. The bottom boss has an outer diameter of Ø56 and a central hole of Ø32, with a total height of 110 mm. The lower fork opening is 34 mm wide, with 18 mm side walls. All dimensions are in millimetres, showing a precise mechanical component designed for pin-jointed connections.

Anonymous1770704754

Create a flat, single-piece 3D-printable candy mold plate designed exclusively for PLA filament. The model is NOT a box or container, only a solid flat plate with recessed cavities. Overall plate dimensions are 160 × 160 × 10 mm, suitable for the Bambu Lab A1 Mini (180 × 180 × 180 mm). The top surface contains 20 identical heart-shaped candy cavities arranged in a clean 5 × 4 grid. Each heart cavity is 20 mm wide, 18 mm high, and 6 mm deep, with smooth continuous curves and no sharp internal corners. Base thickness is 3 mm, cavity wall thickness is 2.5 mm. All edges and transitions are filleted with a 1.5 mm radius for easy candy release. The bottom surface is completely flat. No text, no logos, no lid, no assembly. Design must be manifold, watertight, support-free, with overhangs under 45°, optimized for clean PLA printing only.

Anonymous1768835259

Create a precise 3D-printable candy mold tray designed for the Bambu Lab A1 Mini (180×180×180 mm build volume). The model is a flat rectangular tray with overall dimensions of 160×160×12 mm to ensure safe clearance. The tray contains 24 identical candy cavities arranged in a 6×4 grid. Each cavity is a smooth spherical dome shape with a diameter of 18 mm and a depth of 9 mm, optimized for hard candy or gummies. All edges are filleted with a 1.5 mm radius for easy demolding and stress reduction. The base thickness is 3 mm, and cavity walls are 2.5 mm thick for durability. The underside is flat with no supports required. The design is minimalist, food-mold oriented, symmetrical, and optimized for single-material printing (PLA or PETG). Ensure watertight geometry, no overhangs above 45°, and clean manifold topology.

Anonymous1768835259

Create a 3D printable electronics enclosure for an Arduino-based speedometer.
Two-part design: front shell + back shell, assembled with screws.
External size: 74 × 39 × 22 mm
Wall thickness: 2 mm
Internal clearance: minimum 70 × 35 × 18 mm
Mounting:
4 internal standoffs for M2 screws
Hole diameter: 2.2 mm
Standoff height: 4 mm
Screws insert from back into front
Front shell:
OLED window cutout 23 × 12 mm
Recess depth: 1 mm
Window centered horizontally, upper half of front face
Back shell:
Flat back
Space for Li-Po battery ~60 × 20 × 3 mm
Optional ribs to hold battery
Ports:
USB charging cutout on short side
Size: 9 × 4 mm with +0.5 mm tolerance

Anonymous1769427949