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
Sk2 063 1Al 1 | 3D CAD Engineering Model
MACHINE DESIGN · SK2 063 1AL 1

Sk2 063 1Al 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
3D Printible Flexible Coupling For Nema17 1 | 3D CAD Engineering Model
MACHINE DESIGN · FLEXIBLE COUPLING

3D Printible Flexible Coupling For Nema17 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Freezer Scraper 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · FREEZER SCRAPER 1

Freezer Scraper 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Slim Can Adapter For 3Rd Generation Toyota Prius 1 | 3D CAD Engineering Model
AUTOMOTIVE · SLIM CAN ADAPTER

Slim Can Adapter For 3Rd Generation Toyota Prius 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
Te Filtered Power Inlet 1 | 3D CAD Engineering Model
ELECTRICAL · POWER INLET

Te Filtered Power Inlet 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Wro Future Engineer 1 | 3D CAD Engineering Model
ROBOTICS · WRO FUTURE ENGINEER 1

Wro Future Engineer 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
Clamping Ring 2 | 3D CAD Engineering Model
MACHINE DESIGN · CLAMPING RING 2

Clamping Ring 2 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Molde Intercambiavel Para Fabricacao De Aduelas Interchangeable Mold For Making | 3D CAD Engineering Model
INDUSTRIAL DESIGN · INTERCHANGEABLE MOLD

Molde Intercambiavel Para Fabricacao De Aduelas Interchangeable Mold For Making | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Holder For Storing Fishing Gear 1 | 3D CAD Engineering Model
HOLDER FOR STORING FISHING GEAR 1

Holder For Storing Fishing Gear 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Satranc Mat 1 | 3D CAD Engineering Model
3D PRINTING · SATRANC MAT 1

Satranc Mat 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Raspberry Pi 4 B And 5 Case 1 | 3D CAD Engineering Model
3D PRINTING · RASPBERRY PI 4 B

Raspberry Pi 4 B And 5 Case 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Sg7 5 34 5 8 27 1 | 3D CAD Engineering Model
MACHINE DESIGN · SG7 5 34 5 8 27 1

Sg7 5 34 5 8 27 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Imou Ranger 2C Wedge Mount 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · IMOU RANGER 2C

Imou Ranger 2C Wedge Mount 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Youtube 10M Play Button 1 | 3D CAD Engineering Model
3D PRINTING · YOUTUBE 10M PLAY BUTTON

Youtube 10M Play Button 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Hanuman Gadaa 1 | 3D CAD Engineering Model
3D PRINTING · HANUMAN GADAA 1

Hanuman Gadaa 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ice Cubes 2 | 3D CAD Engineering Model
3D PRINTING · ICE CUBES 2

Ice Cubes 2 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
2 Cavity Cloth Hanger Mold 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · CLOTH HANGER MOLD

2 Cavity Cloth Hanger Mold 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
K2 Nozzle Camera 1 | 3D CAD Engineering Model
MACHINE DESIGN · K2 NOZZLE CAMERA 1

K2 Nozzle Camera 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ugreen Vertical Mouse 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · UGREEN VERTICAL MOUSE 1

Ugreen Vertical Mouse 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Female 1 | 3D CAD Engineering Model
MEDICAL · FEMALE 1

Female 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Skimmer Flap 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · SKIMMER FLAP 1

Skimmer Flap 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Drone Frame 28 | 3D CAD Engineering Model
ROBOTICS · DRONE FRAME 28

Drone Frame 28 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...275276277278279...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