DIY CNC router built with V-Slot aluminum profiles, designed to be robust, modular and fully customizable.

Suitable for routing, engraving and laser applications depending on the tool used.

🔧 STRUCTURE

V-Slot C-beam profiles for X and Y axes

2040 aluminum extrusion for the base frame

2080 profile for vertical support (X-axis column)

Internal reinforcement bracket between 2080 and C-beam

Modular design (working area can be adjusted)

⚙️ MOTION SYSTEM

Lead screw system (T8, 4-start)

Max recommended lead screw length: ~1000 mm

Z-axis lead screw length: 100 mm

4 × 608 bearings total

🔹 Lead nuts:

Square POM lead nuts (required for X and Y)

Round lead nut (Z-axis)

🔩 Y-AXIS (x2)

Dual motor system (1 per side)

2 independent carriages

🔹 Each carriage includes:

8 V-slot wheels

4 × M5 × 70 mm bolts

4 × lock nuts

🔹 Wheel system:

4 × 6 mm spacers

4 × eccentric nuts (6 mm)

4 × 9 mm spacers

🔹 Mounting:

20 × M5 × 25 mm bolts (threaded into C-beam)

16 × M5 × 10 mm bolts + T-nuts (2040 frame)

🔹 Movement:

Square POM lead nut + spacers

608 bearing

Stepper motor mount

🔩 X-AXIS

Mounted on 2080 vertical profile

Internal reinforcement bracket required

🔹 Mounting:

8 × M5 × 25 mm bolts

8 × M5 × 16 mm bolts + T-nuts

16 × M5 × 10 mm bolts + T-nuts

🔹 Carriage:

Dual plate design

8 V-slot wheels

4 × M5 × 70 mm bolts

4 × lock nuts

🔹 Wheel system:

4 × 6 mm spacers

4 × eccentric nuts (6 mm)

4 × 9 mm spacers

🔹 Movement:

Square POM lead nut

2 × 9 mm spacers

🔩 Z-AXIS

Mounted on X carriage.

🔹 Linear motion:

2 × Ø12 mm rods (recommended: hardened & ground)

Length: 140 mm

🔹 Linear bearings:

4 × LM12UU

M5 x 16/20mm bolts + lock nuts

🔹 Lead screw system:

T8 lead screw (100 mm)

Round lead nut (4 × M3 × 20 mm bolts + nuts)

608 bearing

🔹 Motor:

4 × M3 bolts

🔹 Travel:

~60 mm

🔹 Tool mount:

4 mounting holes

Included bracket for ~530W Makita-style trim router

🔌 ELECTRONICS

4 × NEMA 17 stepper motors (~90Ncm)

DRV8825 drivers

CNC Shield (Arduino Uno compatible)

Arduino Uno running GRBL

Power Switching 12v 15a

🔹 Couplers:

Flexible couplers recommended

🔧 CABLE MANAGEMENT

Drag chain or cable sleeve recommended

Suggested support mounted to C-beam using a 2020 spacer

⚠️ Not included in files

⚠️ IMPORTANT NOTES

Threading (M5) required on aluminum profiles

Verify hole diameter (M5 vs M6)

Insert motor screws before mounting

No endstops included (recommended)

Use lock nuts (nyloc) due to vibrations

Cable management recommended

🎯 USE CASES

Wood cutting

Acrylic work

Engraving

Light PCB milling

⚠️ SAFETY DISCLAIMER

This CNC machine is a DIY project intended for experienced users.

The author is not responsible for any damage, injury, or accidents resulting from improper use, assembly, or configuration of this machine.

Always ensure all components are properly secured, aligned, and calibrated before operation.

Verify mechanical integrity, electrical connections, and tool setup prior to use.

Operate the machine at your own risk and follow proper safety precautions at all times.

💡 FINAL NOTE

Fully customizable CNC design – adapt dimensions and components to your needs.

DIY CNC Router – V-Slot Frame – Modular & Custom Machine

0.2mm layer, 2 walls, 15% infill

0.2mm layer, 2 walls, 15% infill