3D Printing CAD Models

Browse CAD models suited for 3D printing workflows. Preview online and download STL, STEP and mesh files for slicers and print-ready projects.

Browse by part & function

The axis engineers actually search on — pick a part type to filter the catalog.

See all parts →

Build kits

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

All collections →
CONSUMER ELECTRONICS

iPhone Accessory & Case Design Kit

A practical iPhone accessory cluster for designing cases, charging stands, holders and fit-checking around real phone geometry.

6 partspairs verified
DRONES / UAV

250 mm FPV Drone Build Kit

A complete FPV quad build cluster covering frame, propulsion, camera, control electronics, battery housing and mounting hardware.

9 partspairs verified
MOTION CONTROL

NEMA 17 Motion / Linear Actuator Kit

A motion-control cluster around a NEMA 17 stepper, bracket, coupler, GT2 belt, pulley, bearing and driver.

10 partspairs verified
HARDWARE

Metric Fasteners & Threaded Hardware Pack

A reusable ISO/metric fastener library cluster with screws, nuts, washers, inserts, standoffs and bolt assemblies.

6 partspairs verified
3D PRINTING

3D Printer Motion & Extruder Upgrade Kit

A 3D-printer upgrade cluster combining hotend parts, filament handling, stepper drive and motion hardware.

14 partspairs verified
ELECTRONICS PROTOTYPING

Arduino / ESP32 Prototyping Kit

A maker electronics cluster with Arduino, ESP32, breadboard, shield, servo, battery holder and enclosure.

13 partspairs verified
ROBOTICS

Robotic Arm + Gripper Kit

A robotic manipulator cluster with 6-DOF arm, gripper, wrist, servo mounts, actuator and linear guide components.

12 partspairs verified
CNC MACHINING

CNC Workholding & Tooling Kit

A CNC machining cluster covering table, clamping, vise, chuck, collet holder, spindle and ball-screw motion.

14 partspairs verified
HVAC / DUCTING

HVAC Ventilation Duct Assembly Kit

A ventilation product cluster with grille, damper, duct adapter, fan, filter, flange and duct clamp.

8 partspairs verified
FLUID POWER

Hydraulic / Pneumatic Pump & Valve Manifold Kit

A fluid-power cluster combining pump, valves, pressure gauge, manifold block, pipe and coupling parts.

16 partspairs verified
MOBILE ROBOTICS

RC / Line-Follower Robot Chassis Kit

A small mobile-robot cluster with chassis, wheels, hubs, motors, motor mounts, controller, battery holder and damper.

16 partspairs verified
WORKSPACE ACCESSORIES

Desk Cable + Phone Stand Workstation Kit

A desk-organization product cluster combining cable routing, phone holders, headphone stands and laptop/iMac stands.

8 partspairs verified
CAMERA / IMAGING RIGS

Camera Gimbal & Mount Rig Kit

A camera-rig cluster with gimbal, camera modules, tripod, tilt head, GoPro mount and camera bracket parts.

8 partspairs verified
AUTOMOTIVE & MOBILITY

1:10 RC Car Drivetrain & Suspension Kit

A 1:10 RC Car Drivetrain & Suspension Kit cluster covering related CAD components for Automotive & Mobility.

5 partspairs verified
ROBOTICS & MECHATRONICS

Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit

A Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit cluster covering related CAD components for Robotics & Mechatronics.

1 partpairs verified
MOTORS & POWER TRANSMISSION

Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit

A Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit cluster covering related CAD components for Motors & Power Transmission.

1 partpairs verified
HYDRAULICS & PNEUMATICS

Belt & Roller Conveyor Design Kit

A Belt & Roller Conveyor Design Kit cluster covering related CAD components for Hydraulics & Pneumatics.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Centrifugal Pump & Motor Skid Kit

A Centrifugal Pump & Motor Skid Kit cluster covering related CAD components for Pumps & Fluid Systems.

8 partspairs verified
GENERAL ENGINEERING

Honda C-Series Engine Parts Pack

A Honda C-Series Engine Parts Pack cluster covering related CAD components for General Engineering.

4 partspairs verified
VALVES & FLOW CONTROL

Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack

A Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

1 partpairs verified
ENCLOSURES & PANELS

IP65/IP67 Electrical Enclosure & Control Panel Pack

A IP65/IP67 Electrical Enclosure & Control Panel Pack cluster covering related CAD components for Enclosures & Panels.

9 partspairs verified
GENERAL ENGINEERING

Industrial Gearmotor & Drive Kit

A Industrial Gearmotor & Drive Kit cluster covering related CAD components for General Engineering.

9 partspairs verified
VALVES & FLOW CONTROL

Industrial Valve & Actuation Pack

A Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Peristaltic / Dosing Pump Prototyping Kit

A Peristaltic / Dosing Pump Prototyping Kit cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
ROBOTICS & MECHATRONICS

Raspberry Pi Case & Display Kit

A Raspberry Pi Case & Display Kit cluster covering related CAD components for Robotics & Mechatronics.

6 partspairs verified
ENGINES & POWERTRAIN

Superquadro Engine Internals Kit

A Superquadro Engine Internals Kit cluster covering related CAD components for Engines & Powertrain.

4 partspairs verified
PUMPS & FLUID SYSTEMS

Vacuum Pump System Pack

A Vacuum Pump System Pack cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
556 models2D drawings
Sort by:
Free
3D Printable Rat Feet for Pranks and Fun
3D PRINTING · RAT FEET 3D PRINTABLE 1

3D Printable Rat Feet for Pranks and Fun

.STEP
Convert to
Free
Aftermarket Carriage for Hot Ends and Extruders
3D PRINTING · CREALITY SERMOON D3

Aftermarket Carriage for Hot Ends and Extruders

.STEP
Convert to
Free
Ceramic Delta 3D Printer for Precise and Intricate Ceramic Fabrication
3D PRINTING · DELTA 3D PRINTER 9

Ceramic Delta 3D Printer for Precise and Intricate Ceramic Fabrication

.STEP
Convert to
Free
Gyroelongated Triangular Bicupola - Johnson Solid Polyhedron
3D PRINTING · GYROELONGATED TRIANGULAR BICUPOLA

Gyroelongated Triangular Bicupola - Johnson Solid Polyhedron

.STEP
Convert to

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
Elegant Candle Holder for Home and Holiday Decoration
3D PRINTING · CANDLE HOLDER 76

Elegant Candle Holder for Home and Holiday Decoration

.STEP
Convert to
Free
Accurate HGX-Lite Extruder Model Based on Precise Measurements
3D PRINTING · GENERIC WISH HGX LITE KNOCKOFF 1

Accurate HGX-Lite Extruder Model Based on Precise Measurements

.STEP
Convert to
Free
3D Model of a Fearful Emoji
3D PRINTING · EMOJI FEARFUL 1

3D Model of a Fearful Emoji

.STEP
Convert to
Free
Triple Arm Fidget Spinner with Enhanced Grip Design
3D PRINTING · FIDGET SPINNER TRIPLE WITH TEETH 1

Triple Arm Fidget Spinner with Enhanced Grip Design

.STEP
Convert to
Free
Elegant Golden Flower Vase 3D Model
3D PRINTING · GOLDEN FLOWER VASE 1

Elegant Golden Flower Vase 3D Model

.STEP
Convert to
Free
3D Model of a Chess King Piece - CAD Design Tutorial
3D PRINTING · CHESSPIECE

3D Model of a Chess King Piece - CAD Design Tutorial

.STEP
Convert to
Free
Decagonal Trapezohedron Polyhedron Model
3D PRINTING · DECAGONAL TRAPEZOHEDRON

Decagonal Trapezohedron Polyhedron Model

.STEP
Convert to
Free
AC Remote Holder - Secure and Convenient Storage Solution
3D PRINTING · AC REMOTE HOLDER 2

AC Remote Holder - Secure and Convenient Storage Solution

.STEP
Convert to
Free
3D Printable Sleeve for Vortec V900 Seatpost and Handlebar
3D PRINTING · VORTEC V900

3D Printable Sleeve for Vortec V900 Seatpost and Handlebar

.STEP
Convert to
Free
Card Casing for MKSTinyBee MKS24
3D PRINTING · CARD CASING 1

Card Casing for MKSTinyBee MKS24

.STEP
Convert to
Free
Tic Tac Toe Desk Game 3D Model for Printing
3D PRINTING · TIC TAC TOE PISKVORKY 1

Tic Tac Toe Desk Game 3D Model for Printing

.STEP
Convert to
Free
Compact Accessory Case for SD Cards and Card Readers on 3D Printers
3D PRINTING · MINI 3D PRINTED EXTRUSION ACCESSARY CASE

Compact Accessory Case for SD Cards and Card Readers on 3D Printers

.STEP
Convert to
Free
3D Printed Metric Tap Index for M1.6 to M12 Sizes
3D PRINTING · METRIC TAP INDEX

3D Printed Metric Tap Index for M1.6 to M12 Sizes

.STEP
Convert to
Free
Dremel Holder Using Iberville BC2020 Electric Utility Box
3D PRINTING · DREMEL HOLDER

Dremel Holder Using Iberville BC2020 Electric Utility Box

.STEP
Convert to
Free
Apple TV Siri Remote Holder - Secure and Convenient Storage
3D PRINTING · SIRI REMOTE HOLDER 1

Apple TV Siri Remote Holder - Secure and Convenient Storage

.STEP
Convert to
Free
Remixed HyperCube Style Case for Orange Pi 5 Max with Cooling Enhancements
3D PRINTING · HYPERCUBE S

Remixed HyperCube Style Case for Orange Pi 5 Max with Cooling Enhancements

.STEP
Convert to
Free
High-Speed Hard Steel Reduction Gear for Motors
3D PRINTING · HGX LITE EXTRUDER 2

High-Speed Hard Steel Reduction Gear for Motors

.STEP
Convert to
Free
Rotating Mechanism Model with Coin Pockets
3D PRINTING · TOP 55

Rotating Mechanism Model with Coin Pockets

.STEP
Convert to