R-CNC specifications

I created the R-CNC because the printable CNCs found on the net did not suit me, I even mounted a very famous on Thingiverse but it lacked a little rigidity, and especially it was the “ Hell to keep the X and Y axes well perpendicular!

I also wanted to keep the mind “Printable cheap CNC, easy to assemble, easy to use” for the same budget with better quality 🙂 It’s done! The budget of this complete CNC revolves around € 350 router included! Free files and tutorials!

It has a large area of useful milling, 550x550mm

Fully Autonomous and very easy to use, it just needs to be plugged into an outlet:
-Place it at the desired location
-Connect the plug
-Fix the milling stock
Set the router bit manually to the point of origin with the adjustment wheels
-Insert the SD card containing the g-code
-Start the program via the LCD


It also has 4 rubber pads at each angle, anti-vibration and anti scratch.

The electronics are integrated into the machine and it has a front USB port to connect a computer to the Ramps 1.4 if necessary without dismantling everything.

Clean installation thanks to dragchains

The pressure of all bearings on the square tubes is fully adjustable

Very high torque for Y moving thanks to a nema motor 23 multiplied by 3 with pulley 20×60 teeth

Integrated LED lighting

Easy mounting with printable drilling templates

Tested successfully on wood and plastic at 550mm / min and 4mm passes ! the measurements are perfect at 5 / 100th of mm, the diagonals of the squares are equal, the round ones are round!


Tested on aluminium at 500mm/min but I did not have the suitable end mill for the test !

Go to the parts list !

7 thoughts on “R-CNC specifications

  1. Bonjour,
    Je ne suis pas sûr d’avoir bien compris la question, mais si tu me demandes pourquoi je n’ai pas mit d’huile de coupe, je réponds que c’est pour éviter d’en imbiber mon plateau en MDF. Je ne me sers de ma R-CNC uniquement pour le bois et les composites, donc je n’allais pas tout tacher juste pour un test sur l’alu. De plus il est possible de fraiser de l’alu sans huile de coupe, il faut la bonne fraise, la bonne vitesse d’avance et de rotation de façon à éjecter le copeau de manière optimale même si effectivement l’huile de coupe facilite la chose et réduit le risque que l’alu fonde et accroche à la fraise.

  2. This is an awesome design! Thanks for all the hard work and effort you have put into it!

    I am likely to want to increase the size of it though, especially the Z axis. I may well also add in an a&b or c axis to turn it into a 5 axis machine.

    Great work though! Well done!

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