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
Av21 1 | 3D CAD Engineering Model
MACHINE DESIGN · AV21 1

Av21 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ocean Research Vehicle Orv 1 | 3D CAD Engineering Model
MARINE · OCEAN RESEARCH VEHICLE

Ocean Research Vehicle Orv 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Steel Mezzanine 1 | 3D CAD Engineering Model
CONSTRUCTION · STEEL MEZZANINE 1

Steel Mezzanine 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
External Pile Hoop 1 | 3D CAD Engineering Model
CONSTRUCTION · EXTERNAL PILE HOOP 1

External Pile Hoop 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
Carabine Hook 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · CARABINE HOOK 1

Carabine Hook 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Boat Trailer 5 | 3D CAD Engineering Model
MARINE · BOAT TRAILER 5

Boat Trailer 5 | 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
Trolley For Transportation Of Watercraft 1 | 3D CAD Engineering Model
MARINE · TROLLEY

Trolley For Transportation Of Watercraft 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
High Tech Plastics Bolster Elite 1 | 3D CAD Engineering Model
3D PRINTING · HIGH TECH PLASTICS BOLSTER ELITE 1

High Tech Plastics Bolster Elite 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Control Head Series 5360 1100 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · CONTROL HEAD SERIES 5360 1100 1

Control Head Series 5360 1100 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Fin One 1 | 3D CAD Engineering Model
ROBOTICS · FIN ONE 1

Fin One 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Cabellora Boat 1 | 3D CAD Engineering Model
MARINE · CABELLORA BOAT 1

Cabellora Boat 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Mini Trolling Motor 1 | 3D CAD Engineering Model
MARINE · MINI TROLLING MOTOR 1

Mini Trolling Motor 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Chappelle 10Ft Dinghy 1 | 3D CAD Engineering Model
MARINE · CHAPPELLE 10FT DINGHY

Chappelle 10Ft Dinghy 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Propeller 255 | 3D CAD Engineering Model
AVIATION · PROPELLER 255

Propeller 255 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Propeller 256 | 3D CAD Engineering Model
AVIATION · PROPELLER 256

Propeller 256 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Vibration Absorber Hose Line 1 | 3D CAD Engineering Model
AUTOMOTIVE · VIBRATION ABSORBER

Vibration Absorber Hose Line 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Insulator Boot Alternator Type 1 | 3D CAD Engineering Model
ELECTRICAL · INSULATOR BOOT

Insulator Boot Alternator Type 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Marine Propeller 9 | 3D CAD Engineering Model
MARINE · MARINE PROPELLER 9

Marine Propeller 9 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Propeller Cast 1 | 3D CAD Engineering Model
MARINE · PROPELLER CAST 1

Propeller Cast 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Propellers 4 | 3D CAD Engineering Model
AEROSPACE · PROPELLERS 4

Propellers 4 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Propeller 261 | 3D CAD Engineering Model
AVIATION · PROPELLER 261

Propeller 261 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Trailer Hitch Coupler A Frame 1 | 3D CAD Engineering Model
AUTOMOTIVE · TRAILER HITCH

Trailer Hitch Coupler A Frame 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...247248249250251...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