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
Big Boat Hull 1 | 3D CAD Engineering Model
MARINE · BOAT HULL

Big Boat Hull 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ump9 1 | 3D CAD Engineering Model
3D PRINTING · UMP9 1

Ump9 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
2263 | 3D CAD Engineering Model
MACHINE DESIGN · ENGINEERING VISUALIZATION

2263 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Bote 4 | 3D CAD Engineering Model
MARINE · BOTE 4

Bote 4 | 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
Stena Blue 1 | 3D CAD Engineering Model
MARINE · STENA BLUE 1

Stena Blue 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Stena Ship 4 Barco 1 | 3D CAD Engineering Model
MARINE · STENA SHIP 4 BARCO 1

Stena Ship 4 Barco 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
A Brief Study Of Hydrofoil Wave Damper 1 | 3D CAD Engineering Model
MARINE · HYDROFOIL

A Brief Study Of Hydrofoil Wave Damper 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Vector Stena 195 1 | 3D CAD Engineering Model
MACHINE DESIGN · VECTOR STENA 195 1

Vector Stena 195 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Stb 3R3 1 | 3D CAD Engineering Model
MACHINE DESIGN · STB 3R3 1

Stb 3R3 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Stb 3R5 1 | 3D CAD Engineering Model
MACHINE DESIGN · STB 3R5 1

Stb 3R5 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Kata Ro Ro For Stena Lines 1 | 3D CAD Engineering Model
MARINE · KATA RO RO

Kata Ro Ro For Stena Lines 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
L009 200 Meters Loa 1 | 3D CAD Engineering Model
MARINE · L009 200 METERS LOA 1

L009 200 Meters Loa 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Semielliptic Trimaran 1 | 3D CAD Engineering Model
MARINE · SEMIELLIPTIC TRIMARAN 1

Semielliptic Trimaran 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Swept Blade Propeller Version 1 1 | 3D CAD Engineering Model
MARINE · SWEPT BLADE PROPELLER

Swept Blade Propeller Version 1 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Wetropolis 2018 Nfm 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · WETROPOLIS 2018 NFM 1

Wetropolis 2018 Nfm 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Boat 168 | 3D CAD Engineering Model
MARINE · BOAT 168

Boat 168 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Rc Boat 4 | 3D CAD Engineering Model
MARINE · RC BOAT 4

Rc Boat 4 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Marine Mooring Winch And Fairlead 1 | 3D CAD Engineering Model
MARINE · MOORING WINCH

Marine Mooring Winch And Fairlead 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Sink 103 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · SINK 103

Sink 103 | 3D CAD Engineering Model

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

Boat Ribs 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
French Cutter 1 | 3D CAD Engineering Model
MACHINE DESIGN · FRENCH CUTTER 1

French Cutter 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Bucket Dredger Bucket 1 | 3D CAD Engineering Model
MARINE · BUCKET DREDGER BUCKET 1

Bucket Dredger Bucket 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...251252253254255...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