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IwCNC? (Light Multipurpose CNC)


Project is a structure for 3-axis CNC, replicable and open source; simple, light, cheap and clean, for a hobby use / home use, able to use various tools, easily replaceable (drills, syringes for food and other materials, pen for writing, low power laser for small incisions), with suction of waste materials and can be stored in a special laser cutted suitcase.

The project evolution provides the possibility of became a 3D printer by replacing the tool with an extruder.

The project is based on GRBL for the control software of the movement, for the mechanical parts are used cheap and readily available materials, such as profiles T-slot aluminum, nylon wheels on standard bearing 626ZZ, and 3D printed supports. The electronics are built on double side pcb in through hole technology, easy to solder, key components are an Arduino Nano and 3 motor driver Stepstick 4988 with extensions pins to enable / disable the tools or tools to manage fan and accessories.

A project inside Fablab Roma Makers by TNT Team

Bruno Luziatelli, Gian Luigi Perrella, Mauro Manco

Imporatant pieces


29,5 diameter

nylon cover

support 35kg each

standard single bearing 626zz


Nano Grbl shield , we decide to design this board for make on credit card size and no remove any pin from original GRBL schema.

With this configuration we can use nano(nice little board) and 3 stepstick (simple and low cost) for manage any 3 axis cnc and max nema17 stepper motor.

Can you se this board on shapeoko or small kit conversion for proxxon mf 70 and any occasion need use grbl and max 3 asix.

Eagle schema on git hub Link

micro stepping setup

Board have jumper for enable microstep 1/2 on all 3 drivers (BLU→OFF RED→ON):

In case need enable 1/8 or 1/16 need solder ms1+ms2 or ms1 + ms2 + ms3:


We use starndard 2020 and 2040 slot 6mm and metal plate for beta use allumminum

This structure help to have compact and clean structure and we can place any cutter on head.

Standard dimension we want make are :

30x40x15 structure 50x50x15 structure


Descritpion size quantity
screw and nutlots
allu plate12
Nema 174

Mounting Guide

  1. structure
  2. carriage y
  3. carriage z
  4. eccentrics
  5. motor and belts
  6. eletronics
iwcnc.txt · Last modified: 2014/10/10 01:36 by exilaus