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
1 to 3 50mm Conduit Splitter for Cable Management
ELECTRICAL · CONDUIT SPLITTER

1 to 3 50mm Conduit Splitter for Cable Management

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Truck Bed DETAILED WITH CAD AND THE MANY DETRAILED FACETS OF THE BED INCLUDING BUT NOT LIMITED TO

Truck Bed DETAILED WITH CAD AND THE MANY DETRAILED FACETS OF THE BED INCLUDING BUT NOT LIMITED TO

.OBJ
Open OBJ file viewerOpen CAD file converter
<100 downloads
Preview
Free
Number Two of the files from Shared Data

Number Two of the files from Shared Data

.STL
Open STL file viewerConvert STL to STEP
<100 downloads
Preview
Free
motor file and stator file for the using blender to step

motor file and stator file for the using blender to step

.STL
Open STL file viewerConvert STL to STEP
<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
high quality model high quality model hi

high quality model high quality model hi

.OBJ
Open OBJ file viewerOpen CAD file converter
<100 downloads
Preview
Free
data that has been made into a c a d file for viewing

data that has been made into a c a d file for viewing

.OBJ
Open OBJ file viewerOpen CAD file converter
<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
mistral class lpd ship for amphibious operations

mistral class lpd ship for amphibious operations

.OBJ
Open OBJ file viewerOpen CAD file converter
<100 downloads
Preview
Free
3D Model of a High-Performance Electric Vehicle with Aerodynamic Optimization

3D Model of a High-Performance Electric Vehicle with Aerodynamic Optimization

.STL
Open STL file viewerConvert STL to STEP
<100 downloads
Preview
Free
Gear of an engine that usually use in motor engine , all type of engine can use this gear

Gear of an engine that usually use in motor engine , all type of engine can use this gear

.STL
Open STL file viewerConvert STL to STEP
<100 downloads
Preview
Free
it a good of this good ok beautiful good product good good good

it a good of this good ok beautiful good product good good good

.STL
Open STL file viewerConvert STL to STEP
<100 downloads
Preview
Free
Ink Slinger 1 | 3D CAD Engineering Model
3D PRINTING · INK SLINGER 1

Ink Slinger 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Pro Grip Clamp Hubs Just Cuz Robotics 1 | 3D CAD Engineering Model
ROBOTICS · PRO GRIP CLAMP HUBS

Pro Grip Clamp Hubs Just Cuz Robotics 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Simple Scissor Lift Mechanism 1 | 3D CAD Engineering Model
MACHINE DESIGN · SCISSOR LIFT

Simple Scissor Lift Mechanism 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Caixa De Comando 2 | 3D CAD Engineering Model
MACHINE DESIGN · CAIXA DE COMANDO 2

Caixa De Comando 2 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Speed Rapid 1 | 3D CAD Engineering Model
3D PRINTING · SPEED RAPID 1

Speed Rapid 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Escalera De Acceso 3 | 3D CAD Engineering Model
CONSTRUCTION · ESCALERA DE ACCESO 3

Escalera De Acceso 3 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Esp32 Cam Enclosure For Door Visor 1 | 3D CAD Engineering Model
3D PRINTING · ESP32 CAM ENCLOSURE

Esp32 Cam Enclosure For Door Visor 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Two Stage Staircase 2 | 3D CAD Engineering Model
ARCHITECTURE · TWO STAGE STAIRCASE 2

Two Stage Staircase 2 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Tqfp 32 7X7 1 | 3D CAD Engineering Model
ELECTRICAL · TQFP32

Tqfp 32 7X7 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Hyperboloidal Gear Model 1 | 3D CAD Engineering Model
MACHINE DESIGN · HYPERBOLOIDAL GEAR

Hyperboloidal Gear Model 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Abstract Model 1 | 3D CAD Engineering Model
ABSTRACT MODEL 1

Abstract Model 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
F22 Raptor 4 | 3D CAD Engineering Model
AVIATION · F22 RAPTOR 4

F22 Raptor 4 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...221222223224225...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