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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The axis engineers actually search on — pick a part type to filter the catalog.

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Build kits

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

All collections
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.

9 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.

10 partspairs verified
HARDWARE

Metric Fasteners & Threaded Hardware Pack

A reusable ISO/metric fastener library cluster with screws, nuts, washers, inserts, standoffs and bolt assemblies.

6 partspairs verified
3D PRINTING

3D Printer Motion & Extruder Upgrade Kit

A 3D-printer upgrade cluster combining hotend parts, filament handling, stepper drive and motion hardware.

14 partspairs verified
ELECTRONICS PROTOTYPING

Arduino / ESP32 Prototyping Kit

A maker electronics cluster with Arduino, ESP32, breadboard, shield, servo, battery holder and enclosure.

13 partspairs verified
ROBOTICS

Robotic Arm + Gripper Kit

A robotic manipulator cluster with 6-DOF arm, gripper, wrist, servo mounts, actuator and linear guide components.

12 partspairs verified
CNC MACHINING

CNC Workholding & Tooling Kit

A CNC machining cluster covering table, clamping, vise, chuck, collet holder, spindle and ball-screw motion.

14 partspairs verified
HVAC / DUCTING

HVAC Ventilation Duct Assembly Kit

A ventilation product cluster with grille, damper, duct adapter, fan, filter, flange and duct clamp.

8 partspairs verified
FLUID POWER

Hydraulic / Pneumatic Pump & Valve Manifold Kit

A fluid-power cluster combining pump, valves, pressure gauge, manifold block, pipe and coupling parts.

16 partspairs verified
MOBILE ROBOTICS

RC / Line-Follower Robot Chassis Kit

A small mobile-robot cluster with chassis, wheels, hubs, motors, motor mounts, controller, battery holder and damper.

16 partspairs verified
WORKSPACE ACCESSORIES

Desk Cable + Phone Stand Workstation Kit

A desk-organization product cluster combining cable routing, phone holders, headphone stands and laptop/iMac stands.

8 partspairs verified
CAMERA / IMAGING RIGS

Camera Gimbal & Mount Rig Kit

A camera-rig cluster with gimbal, camera modules, tripod, tilt head, GoPro mount and camera bracket parts.

8 partspairs verified
AUTOMOTIVE & MOBILITY

1:10 RC Car Drivetrain & Suspension Kit

A 1:10 RC Car Drivetrain & Suspension Kit cluster covering related CAD components for Automotive & Mobility.

5 partspairs verified
ROBOTICS & MECHATRONICS

Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit

A Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit cluster covering related CAD components for Robotics & Mechatronics.

1 partpairs verified
MOTORS & POWER TRANSMISSION

Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit

A Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit cluster covering related CAD components for Motors & Power Transmission.

1 partpairs verified
HYDRAULICS & PNEUMATICS

Belt & Roller Conveyor Design Kit

A Belt & Roller Conveyor Design Kit cluster covering related CAD components for Hydraulics & Pneumatics.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Centrifugal Pump & Motor Skid Kit

A Centrifugal Pump & Motor Skid Kit cluster covering related CAD components for Pumps & Fluid Systems.

8 partspairs verified
GENERAL ENGINEERING

Honda C-Series Engine Parts Pack

A Honda C-Series Engine Parts Pack cluster covering related CAD components for General Engineering.

4 partspairs verified
VALVES & FLOW CONTROL

Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack

A Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

1 partpairs verified
ENCLOSURES & PANELS

IP65/IP67 Electrical Enclosure & Control Panel Pack

A IP65/IP67 Electrical Enclosure & Control Panel Pack cluster covering related CAD components for Enclosures & Panels.

9 partspairs verified
GENERAL ENGINEERING

Industrial Gearmotor & Drive Kit

A Industrial Gearmotor & Drive Kit cluster covering related CAD components for General Engineering.

9 partspairs verified
VALVES & FLOW CONTROL

Industrial Valve & Actuation Pack

A Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Peristaltic / Dosing Pump Prototyping Kit

A Peristaltic / Dosing Pump Prototyping Kit cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
ROBOTICS & MECHATRONICS

Raspberry Pi Case & Display Kit

A Raspberry Pi Case & Display Kit cluster covering related CAD components for Robotics & Mechatronics.

6 partspairs verified
ENGINES & POWERTRAIN

Superquadro Engine Internals Kit

A Superquadro Engine Internals Kit cluster covering related CAD components for Engines & Powertrain.

4 partspairs verified
PUMPS & FLUID SYSTEMS

Vacuum Pump System Pack

A Vacuum Pump System Pack cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
10,000+ models2D drawings
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Free
Optimized Mechanical Component Design
MACHINE DESIGN · MECHANICAL COMPONENT

Optimized Mechanical Component Design

.STEP
Free
Compact Mecanum Drivetrain Assembly for FTC Robotics
ROBOTICS · MECANUM DRIVETRAIN

Compact Mecanum Drivetrain Assembly for FTC Robotics

.STEP
Free
3D Printable Bearing Cover for Mechanical Assemblies
MACHINE DESIGN · BEARING COVER

3D Printable Bearing Cover for Mechanical Assemblies

.STEP
Free
Professional CAD Model for Engineering Drawings
MACHINE DESIGN · ENGINEERING DRAWINGS

Professional CAD Model for Engineering Drawings

.STEP

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Ribbon Mixer Cap for 200 KG Industrial Mixers
CHEMICAL · RIBBON MIXER CAP

Ribbon Mixer Cap for 200 KG Industrial Mixers

.STEP
Free
Intricate Pyramidal Abstract Sculpture Design with Open Corridors
ARCHITECTURE · PYRAMIDAL SCULPTURE

Intricate Pyramidal Abstract Sculpture Design with Open Corridors

.STEP
Free
Infrared Tachometer Module with Digital and Analog Output
ROBOTICS · INFRARED TACHOMETER

Infrared Tachometer Module with Digital and Analog Output

.STEP
Free
60 ml Volume Container CAD Model
INDUSTRIAL DESIGN · 60 ML CONTAINER

60 ml Volume Container CAD Model

.STEP
Free
Standard Tailstock Dial with Depth Indication
MACHINE DESIGN · TAILSTOCK DIAL

Standard Tailstock Dial with Depth Indication

.STEP
Free
Reinforced Coffee Dosing Spoon 3D Model
3D PRINTING · COFFEE DOSING SPOON

Reinforced Coffee Dosing Spoon 3D Model

.STEP
Free
Low-Cost Durable Cargo Cart for Efficient Transport
INDUSTRIAL DESIGN · CARGO CART

Low-Cost Durable Cargo Cart for Efficient Transport

.STEP
Free
Spring-Loaded Sliding Mechanism for Laser Focus Adjustment
MACHINE DESIGN · SPRING-LOADED MECHANISM

Spring-Loaded Sliding Mechanism for Laser Focus Adjustment

.STEP
Free
Killflash Accessory for 5.12 EOTech Sight
KILLFLASH

Killflash Accessory for 5.12 EOTech Sight

.STEP
Free
Octahedron Geometric Model for Engineering Applications
INDUSTRIAL DESIGN · OCTAHEDRON

Octahedron Geometric Model for Engineering Applications

.STEP
Free
Klein Bottle 3D Model for Mathematical and Engineering Applications
KLEIN BOTTLE

Klein Bottle 3D Model for Mathematical and Engineering Applications

.STEP
Free
Tennis Ball CAD Model for Engineering Applications
INDUSTRIAL DESIGN · TENNIS BALL

Tennis Ball CAD Model for Engineering Applications

.STEP
Free
High-Precision Messiah Stradivarius 1716 Violin Model Components
MESSIAH STRADIVARIUS 1716

High-Precision Messiah Stradivarius 1716 Violin Model Components

.STEP
Free
MDF Table Bracket with Integrated Dowel for Panel Assembly
CONSTRUCTION · MDF TABLE BRACKET

MDF Table Bracket with Integrated Dowel for Panel Assembly

.STEP
Free
Nema 17 Stepper Motor Stand CAD Model
ROBOTICS · NEMA 17

Nema 17 Stepper Motor Stand CAD Model

.STEP
Free
Screw Nut for 8mm Lead Screw - Precision Mechanical Component
MACHINE DESIGN · SCREW NUT

Screw Nut for 8mm Lead Screw - Precision Mechanical Component

.STEP
Free
Six-Legged Robot Mechanical Design
ROBOTICS · SIX-LEGGED ROBOT

Six-Legged Robot Mechanical Design

.STEP
Free
Brass Insert with Opposing Herringbone for Plastic Installation M6 L5 D8
INDUSTRIAL DESIGN · BRASS INSERT

Brass Insert with Opposing Herringbone for Plastic Installation M6 L5 D8

.STEP