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.

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Curated systems with verified mating parts — download the whole assembly at once.

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MOTION KIT

NEMA 17 Motion Kit

Motor, coupler, shafts & mounts for tabletop CNC, 3D printer & robotics builds.

5 partspairs verified
MOTION KIT

NEMA 23 Motion Kit

Heavier stepper, coupler, shafts & brackets for larger CNC routers & automation rigs.

5 partspairs verified
HARDWARE KIT

M5 Hardware Kit

Bolts, nuts, washers & standoffs sized for NEMA mounts, extrusions & plate assemblies.

8 partspairs verified
10,000+ models2D drawings
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Free
Precision Mechanical Component CAD Model
MACHINE DESIGN · PRECISION COMPONENT

Precision Mechanical Component CAD Model

.STEP
Free
Hydraulic Cylinder Rod and Piston Assembly with Trelleborg Seals
MACHINE DESIGN · HYDRAULIC CYLINDER

Hydraulic Cylinder Rod and Piston Assembly with Trelleborg Seals

.STEP
Free
Plywood Kids Bed Frame Design
INDUSTRIAL DESIGN · PLYWOOD

Plywood Kids Bed Frame Design

.STEP
Free
3D Model for Engineering and Design Applications
MACHINE DESIGN · 3D MODEL

3D Model for Engineering and Design Applications

.STEP
Free
Pool Reactor with Barometric Cooling Circuit for Enhanced Safety and Efficiency
ENERGY AND POWER · POOL REACTOR

Pool Reactor with Barometric Cooling Circuit for Enhanced Safety and Efficiency

.STEP
Free
Core Plate with Complex Design for Industrial Applications
MACHINE DESIGN · CORE PLATE

Core Plate with Complex Design for Industrial Applications

.STEP
Free
Residential House Architectural Model
ARCHITECTURE · RESIDENTIAL HOUSE

Residential House Architectural Model

.STEP
Free
3D House Model for Architectural Visualization
ARCHITECTURE · 3D HOUSE MODEL

3D House Model for Architectural Visualization

.STEP
Free
Plastic Injection Roof Tile with Integrated Photovoltaic Panel
ENERGY AND POWER · PLASTIC INJECTION MOLDING

Plastic Injection Roof Tile with Integrated Photovoltaic Panel

.STEP
Free
Fischertechnik eLearning Model with DIN 867 Tooth Form
MACHINE DESIGN · DIN 867

Fischertechnik eLearning Model with DIN 867 Tooth Form

.STEP
Free
Cutlery Design Concept for Industrial Applications
INDUSTRIAL DESIGN · CUTLERY

Cutlery Design Concept for Industrial Applications

.STEP
Free
RC Car Wheel and Tire Assembly for Arrma Models
AUTOMOTIVE · RC CAR

RC Car Wheel and Tire Assembly for Arrma Models

.STEP
Free
Set of Four Internal House Door Designs for Architectural Projects
ARCHITECTURE · INTERNAL DOOR

Set of Four Internal House Door Designs for Architectural Projects

.STEP
Free
Green Goblin 3D Printer Frame and Components
3D PRINTING · GREEN GOBLIN

Green Goblin 3D Printer Frame and Components

.STEP
Free
Aluminum Tubing Stairs with Bolt Assembly
CONSTRUCTION · ALUMINUM TUBING

Aluminum Tubing Stairs with Bolt Assembly

.STEP
Free
Highseat Design for Hunting and Nature Observation with Enhanced Stability
INDUSTRIAL DESIGN · HIGHSEAT

Highseat Design for Hunting and Nature Observation with Enhanced Stability

.STEP
Free
Light Catcher Design for High-Rise Building with Wind Analysis
ARCHITECTURE · LIGHT CATCHER

Light Catcher Design for High-Rise Building with Wind Analysis

.STEP
Free
Custom Router Baseplate Compatible with 70-71mm Diameter Tools
3D PRINTING · CUSTOM ROUTER BASEPLATE

Custom Router Baseplate Compatible with 70-71mm Diameter Tools

.STEP
Free
Tile Pattern Design for Architectural and Engineering Applications
ARCHITECTURE · TILE PATTERN

Tile Pattern Design for Architectural and Engineering Applications

.STEP
Free
Elevated Water Tank Stand for Consistent Pressure
CONSTRUCTION · ELEVATED WATER TANK STAND

Elevated Water Tank Stand for Consistent Pressure

.STEP
Free
8 Meter High Tower Platform with 6.2m x 6.2m Base
CONSTRUCTION · TOWER PLATFORM

8 Meter High Tower Platform with 6.2m x 6.2m Base

.STEP
Free
Articulated Human Dummy Model in Reading Pose with Safety Gear
INDUSTRIAL DESIGN · ARTICULATED HUMAN DUMMY

Articulated Human Dummy Model in Reading Pose with Safety Gear

.STEP