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
Gaming Console with Integrated Raspberry Pi Camera
INDUSTRIAL DESIGN · GAMING CONSOLE

Gaming Console with Integrated Raspberry Pi Camera

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Heavy Duty DIY CNC Router Mill with Steel Frame and Rack & Pinion Drive
MACHINE DESIGN · DIY CNC ROUTER

Heavy Duty DIY CNC Router Mill with Steel Frame and Rack & Pinion Drive

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Survival Dry Fuel and Match Storage Container
SURVIVALCONTAINER

Survival Dry Fuel and Match Storage Container

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Rear View Camera Holder for Jeep Wrangler
AUTOMOTIVE · REAR VIEW CAMERA HOLDER

Rear View Camera Holder for Jeep Wrangler

.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
Basic Part Model for Beginners in FreeCAD
MACHINE DESIGN · BASIC PART MODEL

Basic Part Model for Beginners in FreeCAD

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Yardforce Mowing Robot Top Cover Hinge with 4mm Screw Holes
ROBOTICS · YARDFORCE

Yardforce Mowing Robot Top Cover Hinge with 4mm Screw Holes

.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
300mm CNC Machine Frame Constructed from Laser Cut Steel Tubes
MACHINE DESIGN · CNC MACHINE FRAME

300mm CNC Machine Frame Constructed from Laser Cut Steel Tubes

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
ISO 3167 A1 Tensile Test Specimen Model
INDUSTRIAL DESIGN · ISO 3167 A1

ISO 3167 A1 Tensile Test Specimen Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
ISO 527-2 Type 1A Tensile Test Specimen Model
ISO 527-2

ISO 527-2 Type 1A Tensile Test Specimen Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
ISO 527-2 Type 1B Tensile Test Specimen Model
INDUSTRIAL DESIGN · ISO 527-2

ISO 527-2 Type 1B Tensile Test Specimen Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
ISO 527-2 Type 1BA Tensile Test Specimen Model
ISO 527-2

ISO 527-2 Type 1BA Tensile Test Specimen Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
ISO 527-2 Type 1BB Tensile Test Specimen Model
ISO 527-2

ISO 527-2 Type 1BB Tensile Test Specimen Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
ISO 527-2 Type 5B Tensile Test Specimen
ISO 527-2

ISO 527-2 Type 5B Tensile Test Specimen

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Random Combat Robot Model 2
ROBOTICS · COMBAT ROBOT

Random Combat Robot Model 2

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ant-Class Battle Bot with Low Profile Tracks and Flippers
ROBOTICS · ANT-CLASS

Ant-Class Battle Bot with Low Profile Tracks and Flippers

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Parametric Endless Chain Link 3D Model for Engineering and Prototyping
MACHINE DESIGN · PARAMETRIC

Parametric Endless Chain Link 3D Model for Engineering and Prototyping

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
3D Printed Desk Organizer with Multiple Compartments and Built-in Ruler
3D PRINTING · DESK ORGANIZER

3D Printed Desk Organizer with Multiple Compartments and Built-in Ruler

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Lathe Machine Safety Guard for Industrial Protection
MACHINE DESIGN · LATHE MACHINE

Lathe Machine Safety Guard for Industrial Protection

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Front Cover for 2.4A Digital Powerbank Socket
ELECTRICAL · 2.4A POWERBANK SOCKET

Front Cover for 2.4A Digital Powerbank Socket

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Pico Gollira Fairyweight 150g Combat Robot Hubmotor Design
ROBOTICS · PICO GOLLIRA

Pico Gollira Fairyweight 150g Combat Robot Hubmotor Design

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Light Sensor for Robotics Applications
ROBOTICS · LIGHT SENSOR

Light Sensor for Robotics Applications

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Load Cell Support for Testing Applications
INDUSTRIAL DESIGN · LOAD CELL SUPPORT

Load Cell Support for Testing Applications

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...219220221222223...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