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
3D Printing Component for Additive Manufacturing
3D PRINTING · ADDITIVE MANUFACTURING

3D Printing Component for Additive Manufacturing

.STEP
Free
Electrical Cable Routing Techniques in SOLIDWORKS
ELECTRICAL · ELECTRICAL CABLE ROUTING

Electrical Cable Routing Techniques in SOLIDWORKS

.STEP
Free
Classic World War I Revolution Gauge 1/3 Scale Model for Nieuport 28
AVIATION · NIEUPORT 28

Classic World War I Revolution Gauge 1/3 Scale Model for Nieuport 28

.STEP
Free
Spoked Wheel for Nieuport 28 Aircraft
AVIATION · SPOKED WHEEL

Spoked Wheel for Nieuport 28 Aircraft

.STEP

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Industrial Mock-Up Model for Design Visualization
INDUSTRIAL DESIGN · MOCK-UP

Industrial Mock-Up Model for Design Visualization

.STEP
Free
Compact Vertical Axis Cassette Apparatus
MACHINE DESIGN · VERTICAL AXIS

Compact Vertical Axis Cassette Apparatus

.STEP
Free
Precision Mechanical Component CAD Model
MACHINE DESIGN · PRECISION COMPONENT

Precision Mechanical Component CAD Model

.STEP
Free
Fixed Wing Aircraft Component CAD Model
AEROSPACE · FIXED WING

Fixed Wing Aircraft Component CAD Model

.STEP
Free
Industrial Battery Component for Engineering Applications
ENERGY AND POWER · INDUSTRIAL BATTERY

Industrial Battery Component for Engineering Applications

.STEP
Free
Fast Air Connector with 1/4 NPT Thread and 1/4-18 Thread Size
INDUSTRIAL DESIGN · FAST AIR CONNECTOR

Fast Air Connector with 1/4 NPT Thread and 1/4-18 Thread Size

.STEP
Free
Amphenol RF TNC Bulkhead Right Angle PCB Coax Connector Model
ELECTRICAL · AMPHENOL RF TNC

Amphenol RF TNC Bulkhead Right Angle PCB Coax Connector Model

.STEP
Free
Nordic Semiconductor Thingy:52 Multi-Sensor Bluetooth 5.0 Prototyping Platform
ELECTRICAL · THINGY:52

Nordic Semiconductor Thingy:52 Multi-Sensor Bluetooth 5.0 Prototyping Platform

.STEP
Free
Atmospheric Water Generator and Green Hydrogen Production Technology
ENERGY AND POWER · ATMOSPHERIC WATER GENERATOR

Atmospheric Water Generator and Green Hydrogen Production Technology

.STEP
Free
Rosenberger TNC Right Angle PCB Coaxial Connector 10 GHz Model
ELECTRICAL · ROSENBERGER TNC

Rosenberger TNC Right Angle PCB Coaxial Connector 10 GHz Model

.STEP
Free
NREL 5MW Wind Turbine Blade Model
ENERGY AND POWER · NREL 5MW

NREL 5MW Wind Turbine Blade Model

.STEP
Free
F7 Aircraft of Bangladesh Air Force - Historical Military Jet
AVIATION · F7

F7 Aircraft of Bangladesh Air Force - Historical Military Jet

.STEP
Free
Boeing 747 Aircraft Model Overview
AVIATION · BOEING 747

Boeing 747 Aircraft Model Overview

.STEP
Free
Discovery Space Shuttle 3D CAD Model
AEROSPACE · DISCOVERY SPACE SHUTTLE

Discovery Space Shuttle 3D CAD Model

.STEP
Free
4 Inch Quad Stinger Drone Frame with 1404 Motors and FPV System
ROBOTICS · 4 INCH QUAD STINGER

4 Inch Quad Stinger Drone Frame with 1404 Motors and FPV System

.STEP
Free
Hydrogen-Powered VTOL Drone Concept for Sustainable Aviation
AVIATION · HYDROGEN FUEL CELL

Hydrogen-Powered VTOL Drone Concept for Sustainable Aviation

.STEP
Free
Propeller Removal Lever Tool for Output Shaft Maintenance
MARINE · PROPELLER REMOVAL LEVER

Propeller Removal Lever Tool for Output Shaft Maintenance

.STEP
Free
Power Transmission Unit for Gearbox Integration
MACHINE DESIGN · POWER TRANSMISSION UNIT

Power Transmission Unit for Gearbox Integration

.STEP