Engineering CAD Design Library

Browse quality-checked 3D CAD models for engineering, product design, prototyping and manufacturing. Preview models online and download files in STEP, STP, IGES, STL, OBJ, PLY, DWG, DXF and more.

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Curated systems with verified mating parts — download the whole assembly at once.

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CONSUMER ELECTRONICS

iPhone Accessory & Case Design Kit

A practical iPhone accessory cluster for designing cases, charging stands, holders and fit-checking around real phone geometry.

6 partspairs verified
DRONES / UAV

250 mm FPV Drone Build Kit

A complete FPV quad build cluster covering frame, propulsion, camera, control electronics, battery housing and mounting hardware.

7 partspairs verified
MOTION CONTROL

NEMA 17 Motion / Linear Actuator Kit

A motion-control cluster around a NEMA 17 stepper, bracket, coupler, GT2 belt, pulley, bearing and driver.

5 partspairs verified
10,000+ models2D drawings
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Free
Detailed 3D Model of CP Stony Creek Bridge - Canadian Railway Architecture
ARCHITECTURE · CP STONY CREEK BRIDGE

Detailed 3D Model of CP Stony Creek Bridge - Canadian Railway Architecture

.STEP
Free
Bike Handle Grip Mold for Silica Molding Applications
AUTOMOTIVE · BIKE HANDLE GRIP

Bike Handle Grip Mold for Silica Molding Applications

.STEP
Free
Mesh Toroid 3D Model for Engineering Applications
MACHINE DESIGN · MESH TOROID

Mesh Toroid 3D Model for Engineering Applications

.STEP
Free
Detailed CAD Model of Sony Walkman - Accurate Replica
INDUSTRIAL DESIGN · SONY WALKMAN

Detailed CAD Model of Sony Walkman - Accurate Replica

.STEP

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Free
3-Inch FPV Drone Inspired Flying Graduation Cap Model
ROBOTICS · FLYING GRADUATION CAP

3-Inch FPV Drone Inspired Flying Graduation Cap Model

.STEP
Free
One Way Valve CAD Model for Fluid Control Systems
INDUSTRIAL DESIGN · ONE WAY VALVE

One Way Valve CAD Model for Fluid Control Systems

.STEP
Free
Professional Part Modeling CAD Design
MACHINE DESIGN · MECHANICAL PART

Professional Part Modeling CAD Design

.STEP
Free
Patterned Basket CAD Model for Industrial Design
INDUSTRIAL DESIGN · PATTERNED BASKET

Patterned Basket CAD Model for Industrial Design

.STEP
Free
Double Coil Filament Holder Bracket for 16mm Shelf
3D PRINTING · FILAMENT HOLDER

Double Coil Filament Holder Bracket for 16mm Shelf

.STEP
Free
Protection Cap for WC Toilet Desk - Industrial Design
INDUSTRIAL DESIGN · PROTECTION CAP

Protection Cap for WC Toilet Desk - Industrial Design

.STEP
Free
Parabigyrate Rhombicosidodecahedron Johnson Solid 3D Model
PARABIGYRATE RHOMBICOSIDODECAHEDRON

Parabigyrate Rhombicosidodecahedron Johnson Solid 3D Model

.STEP
Free
Conceptual Robotic Arm Based on Open Source MeArm with SG90 Servo
ROBOTICS · MEARM

Conceptual Robotic Arm Based on Open Source MeArm with SG90 Servo

.STEP
Free
SMD Storage Box Designed for 1206 Components
ELECTRICAL · SMD STORAGE BOX

SMD Storage Box Designed for 1206 Components

.STEP
Free
Textured Matte Backdrop for Casio F-91W Backlight Enhancement
3D PRINTING · CASIO F-91W

Textured Matte Backdrop for Casio F-91W Backlight Enhancement

.STEP
Free
Dual Cam Shuffling Mechanism for Lightweight Robotics
ROBOTICS · DUAL CAM MECHANISM

Dual Cam Shuffling Mechanism for Lightweight Robotics

.STEP
Free
6-Inch to 4-Inch PVC Hose Adapter
INDUSTRIAL DESIGN · PVC HOSE ADAPTER

6-Inch to 4-Inch PVC Hose Adapter

.STEP
Free
Dual Bevel Gear Fidget Spinner Keychain for Stress Relief
MACHINE DESIGN · DUAL BEVEL GEAR

Dual Bevel Gear Fidget Spinner Keychain for Stress Relief

.STEP
Free
CH-E3Dv6-Bowden Toolhead with E3Dv6 Hotend and BLTouch Sensor
3D PRINTING · CH-E3DV6-BOWDEN

CH-E3Dv6-Bowden Toolhead with E3Dv6 Hotend and BLTouch Sensor

.STEP
Free
KitchenAid Flat Blender Blade Earring 3D Model
JEWELLERY · KITCHENAID BLENDER BLADE

KitchenAid Flat Blender Blade Earring 3D Model

.STEP
Free
Robotic Basket Component for Automated Systems
ROBOTICS · ROBOTIC BASKET

Robotic Basket Component for Automated Systems

.STEP
Free
Rear Camera Phone Holder for Simultaneous Recording and Viewing
INDUSTRIAL DESIGN · PHONE HOLDER

Rear Camera Phone Holder for Simultaneous Recording and Viewing

.STEP
Free
ISO Corner Set for Industrial Applications
INDUSTRIAL DESIGN · ISO CORNER SET

ISO Corner Set for Industrial Applications

.STEP