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.

All3D PrintingAerospaceArchitectureAutomotiveAviationChemicalConstructionElectricalEnergy And PowerIndustrial DesignJewelleryMachine designMarineMedicalMiscellaneousRobotics
10,000+ models2D drawings
Sort by:
Free
Openmv Cam M4 Ov7725 1 | 3D CAD Engineering Model
ROBOTICS · OPENMV CAM M4

Openmv Cam M4 Ov7725 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Gripper Sets Using Parallel Cylinder 1 | 3D CAD Engineering Model
ROBOTICS · GRIPPER SETS

Gripper Sets Using Parallel Cylinder 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Lens Mount 3 | 3D CAD Engineering Model
MACHINE DESIGN · LENS MOUNT 3

Lens Mount 3 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
6 Wheel Drive Rover 1 | 3D CAD Engineering Model
ROBOTICS · 6 WHEEL DRIVE ROVER

6 Wheel Drive Rover 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview

Need a CAD file that is not in the library?

Share your requirement and Marathon OS will match you with a vetted CAD designer for production-ready CAD files, edits and manufacturing documentation.

Get it Built
500+Projects Done
24 hrResponse
15+CAD Tools
Free
Sino Ka 200 120Mm Dro 1 | 3D CAD Engineering Model
MACHINE DESIGN · SINO KA 200 120MM DRO 1

Sino Ka 200 120Mm Dro 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
2024 Crescendo Team 4639 Robot Cadenza 1 | 3D CAD Engineering Model
ROBOTICS · 2024 CRESCENDO TEAM 4639

2024 Crescendo Team 4639 Robot Cadenza 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview

Browse CAD models by file format

STEP CAD modelsSTL CAD modelsIGES CAD modelsOBJ 3D modelsPLY modelsDWG drawingsDXF drawings

Browse CAD models by category

Automotive CAD modelsAerospace CAD modelsRobotics CAD models3D printing CAD modelsArchitecture CAD modelsIndustrial design CAD modelsMedical CAD modelsElectrical CAD models
Free
Weldling Mig Torch 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · WELDLING MIG TORCH 1

Weldling Mig Torch 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
N20 11 | 3D CAD Engineering Model
ROBOTICS · N20 11

N20 11 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Picomini 1 | 3D CAD Engineering Model
ROBOTICS · PICOMINI 1

Picomini 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Simple Swerve Pods V2 Rev 1 | 3D CAD Engineering Model
ROBOTICS · SWERVE POD

Simple Swerve Pods V2 Rev 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Simple Swerve V2 Gobilda 1 | 3D CAD Engineering Model
ROBOTICS · SIMPLE SWERVE V2

Simple Swerve V2 Gobilda 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Openmv Cam H7 Pro 1 | 3D CAD Engineering Model
ROBOTICS · OPENMV CAM H7 PRO 1

Openmv Cam H7 Pro 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Arducam Adapter 1 | 3D CAD Engineering Model
ROBOTICS · ARDUCAM ADAPTER 1

Arducam Adapter 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ball Shooter Turret Model 1 | 3D CAD Engineering Model
ROBOTICS · BALL SHOOTER TURRET MODEL 1

Ball Shooter Turret Model 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Battery Holder 3X18650 1 | 3D CAD Engineering Model
ELECTRICAL · BATTERY HOLDER

Battery Holder 3X18650 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Arduino Mkr1000 Carrier Board With Easyc 1 | 3D CAD Engineering Model
ELECTRICAL · ARDUINO MKR1000

Arduino Mkr1000 Carrier Board With Easyc 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Guide Roller 11 | 3D CAD Engineering Model
MACHINE DESIGN · GUIDE ROLLER 11

Guide Roller 11 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Rmc Header Pin Connectors Collection 1 | 3D CAD Engineering Model
ELECTRICAL · RMC HEADER PIN CONNECTORS

Rmc Header Pin Connectors Collection 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Imu Shield 1 | 3D CAD Engineering Model
ROBOTICS · IMU SHIELD 1

Imu Shield 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Car Shield 1 | 3D CAD Engineering Model
AUTOMOTIVE · CAR SHIELD 1

Car Shield 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Dartbox Pro Brushed Drive Gearmotor For Combat Robotics 27 1 | 3D CAD Engineering Model
ROBOTICS · DARTBOX PRO

Dartbox Pro Brushed Drive Gearmotor For Combat Robotics 27 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Assembly Turn Table Machine 1 | 3D CAD Engineering Model
MACHINE DESIGN · ASSEMBLY TURN TABLE MACHINE 1

Assembly Turn Table Machine 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...305306307308309...next
Marathon OS logoThe CAD marketplace for modern teams
HomeAbout usWhy us?Contact us
Tools3D to 2D Drawing Pipeline3D CAD Viewer3D CAD File Converter
Library
Hire CAD Designers
Production-ready in 24 hrs
👤
→
2D Library
Ask a question
Privacy Policy|Terms of Service|Refund Policy|
© Marathon 2025 All Rights Reserved