CNC Kit Options: 


The size you select is the length of the X and Y Aluminium Profiles that are the motion system.

This forms the outer frame size of the machine.

For instance, selecting X500mm, Y1000mm where X is left to right, Y is forwards and backwards gives you an external size of 500mm x 1000mm, the machine is that size when assembled.

The cutting area is reduced by the size of the X Axis gantry and the Y axis gantry to give the total cutting area, so for instance an XR-3 X1000mm x Y1000mm frame size gives a cut area of 850mm x 820mm. Other models will give different cut areas because the gantries and different sizes.


CNC Controller: 

The CNC controller is the PCB control board that takes your design and then sends signals to the stepper motors and stepper drivers about where and when to move.


No controller. You have your own CNC control so you don't need ours

Option 2: 

PLC4x-G2 Breakout Board a professional 4 axis breakout board, stepper drivers are needed for this board

Option 3: 

The PiBOT kit, a full kit that takes less than 10 minutes to connect, this kit is highly recommended for new CNC users because it is so easy to use AND it has its own software, however this woud not be suitable for the ballscrew and rack drive systems. Stepper Drivers are included in this kit.


RoboCutters CNC Controller,  (stepper motors still needed. but the stepper drivers are included in this option)


RoboCutters CNC Controller, FULL electronics  full kit  (stepper motors INCLUDED)

Option 6: 

This uses a 'standard' electronics kit with a 5 axis controller, detailed below: (stepper motors INCLUDED)

Nema23 Stepper Motor Kit 4Nm x 4 Axis

Option 7: 

The Planet-CNC USB kit, a full CNC USB Controller WITH SOFTWARE so modern PC's or laptops can be used. Stepper Drivers are not included.

Stepper Motors: 

For the controller and stepper drivers to work, stepper motors are the final part in what is needed. The stepper motors we use are the Nema type. We have various models available and your selection of the motor type needed depends mainly on what material you will be cutting most of.

Stepper motors have a Nm value associated with them, the higher the Nm value the less likely the motor is to stall or stop when cutting the material. For instance, cutting soft woods would only need 1 1Nm or at most 2Nm motor, but cutting hard woods or non-ferrous metals cush as brass or aluminium on a regular basis would need a higher Nm value, the higher th value the faster you can cut.

The Z axis motor does not need to be as high an Nm as the XY axes, after all the Z motor simply drills into the material, it does very little else so a 1Nm motor is entirely suitable for most materials.  A 2Nm would be needed for harder materials.

Choose the motor to suit your materials

Power Supply

The CNC controller, motors and stepper drivers all need a power source and this is what the power supply is for, our controllers typically use between 24V and 48V, The CNC controller determines the maximum voltage that can be used. Most of our boards use 24V, though some clients prefer to fit two 24V power supplies to give the motors more power.


CNC Software: 

The CNC controller also needs software, the most popular CNC software with experienced CNC users is Mach3, which requires a parallel LPT/Printer port to function which means that your computer must have a printer port that is compatible or you will buy a computer that has this feature.

The most popular software with new users and people who want to use modern computers (via USB ports) is USBCNC. The USBCNC option still uses our CNC controller but has an adapter that plugs into the PCB control board (above) to provide full USB control.

The Pibot Controller can use GRBL software which is free.

It is up to you which option you choose:

No software (choose this if you choose the Pibot kit or Planet-CNC Kit or you have your own controller)

Mach3 software which works with our CNC controller or any other CNC controller

USBCNC adapter and software (you don't need Mach3 software as well) you STILL need a controller board with this option.



Mach3 machines needs a PC with a parallel port, Windows 32 bit operating system and Mach3 software to allow it to work

USBCNC can work with almost any PC and the USBCNC Control board is supplied with the software needed.


The Spindle

The spindle holds the tool bit, which in turn cuts, drills or mills the materials.

Kress 1050 watt MAXX Power motor, manual speed control 5000rpm start

Makita 700w, manual speed control, should be selected if you mainly intend to work with wood

The VFD type spindle should be selected if you want to control the speed of the spindle via software. This option also includes a Spindle Relay controller that is needed to allow the software to control the spindle speed, plus a spindle mount

The spindles are listed in order of ability and cost, with the Makita being the least powerful but still able to cut soft woods and more easily.

Spindle Option 1:

None: No spindle, a spindle mount will not be included.

Spindle Option 2:

Makita RT0700CX4 700w HERE Suitable for all wood applications, manual speed control, a Makita mount will be included.

Spindle Option 2:

Kress 1050 FME-1 HERE Suitable for Wood, plastics, soft metals such as Aluminum and Brass, manual speed control, a Kress mount will be included

Spindle Option 3:

VFD 1.5Kw Spindle, VFD controller and Plug in Spindle Relay board.  Speed can be controlled fully by the software.


The Design Software

This is the software used to generate the code that is needed for the machine. The CNC Controller takes the code and makes the machine work. The CNC controller cannot just take a design or a drawing, that design has to be made into 'machined' information first.

If you want to use a software package that has been designed to make the process easier, then you have many many choices, our recommendations are:

1. CamBam

2. SketchUCam.


Kress Mount Lower

If you already have a Kress Spindle and you just want the mount, then select this option.


Wheel Set

The wheels are the heart of the motion system, the standard wheel set are made of Delrin, and they are completely suitable for a wide variety of tasks. These are the standard option. Because they are Delrin material they will wear out quicker than the Extreme wheel set.

The Extreme wheel set is made of polycarbonate and each one is milled to shape. 10 times harder than Delrin these wheels will last longer and they will not compress like the Delrin wheels do.


Stepper Cable

The Stepper Cable is this item here you select the same size cable as your machine size. This is shielded cable, it protects the machine from electrical impulses that may be caused by 'noisy' wiring, spindle motors, or other electrical activity in the area.

Option 1: None

Option 2: Shielded Cable, this is shielded 4 core cable, the shield prevents elecrical impulses interfering with the motors


Stepper Cable connections

XLR or Aviation type connectors, both 4 pin, the XLR has a larger solder area and is generally a more rigid connector

Cable Track

These carriers hold the cable in place neatly

Pulley size (belt drive only)

The pulleys supplied are GT2-3mm pitch with 20 tooth. You will get these as standard on the belt drive CNC models with either a 6.35 (1/2in) inside diameter or an 8mm Inside Diameter. If you don't buy your motors from use then we need to know what diameter your motor shafts are. They will either be 6.35mm or 8mm, we need to know!

Option 1: None (You will supply your own)

Option 2: 6.35mm, to fit 6.35mm shafts, typically smaller motors such as .5Nm up to 2.2Nm use this size motor shaft

Option 3: 8mm, to fit 8mm shafts, these are the shaft diamters typically used on 3Nm or higher motors

Option4 : I have ordered motors as part of the kit. We know what pulley size you need if you order motors.


Coupling Size

The pulleys supplied are for the Z axis and the X Axis (on certain models), both attach to motors. The X axis is 7mm one side and the motor shaft the other side. The Z axis is 10mm one side for the ACME leadcrew and the other side fits your motor shaft.

Option 1: None (You will supply your own)

Option 2: 6.35mm, to fit 6.35mm shafts, this is a typical size.

Option 3: 8mm, to fit 8mm shafts,

Option 4: If you order a stepper kit from us we will select the correct size for you.


Drive options:

Belt drive: Our belt drive machines now have twin belts to allow more rugged use. Belts are normally selected to keep drive costs to a minimum.

Lead screw: TR8x1.5, TR8x8 or TR12x3 are what we use on our lead screw systems, the description represents Trapezoidal, Diameter and distance of movement, so for instance the TR8x1.5 is 8mm diameter and will move 1.5mm per full motor revolution.

Ball screw: The traditional, standard drive system on CNC systems but only recommended under 2M, on our systems the Ball screw is either 1605 or 2005, 16mm diameter or 20mm diameter, where necessary this option will be shown.

Rack and Pinion: Used on longer length axis, over 2M and it is a very effective drive mechanism.