Mark Carew made some excellent build videos for the original OX CNC, these videos cover the full mechanical build and provide a first person view into the construction of the original OX.
These videos alone could have been enough to complete our hobby kit. However we wanted to make it even easier. Therefore we have made a complete written instruction manual, with IKEA'eske assembly diagrams. Using our written manual with Mark's videos, should make the build a breeze.
If you have any problems along the way, we are available by phone or email to help you. Also the Openbuilds website and forum (www.openbuilds.com) is a invaluable resource for information and assistance. We also have our own Openbuilds forum thread running for people to discuss this CNC kit, please check it out: www.openbuilds.com/ooznest-ox-cnc-machine
Us and the OX CNC Machine are a proud member of the Made In Britain Directory. The OX CNC Kit is assembled in our UK Warehouse, and we are always pushing to get more individual parts manufactured in the UK. Currently all the extrusions, wires, and plastic parts are manufactured in Britain. We have built a reputation for excellent customer service, and we aim to keep it, when you contact us you can be 100% sure you will be speaking to someone in our UK Office.
The Full Kit includes everything needed to build a working OX CNC Machine except the MDF Spoiler Board. Please see additional extras that can be added in the section below.
All the V-Slot Rails are supplied pre-cut and tapped. The Z-Axis ACME Lead screw is cut to the required length, and slightly filed, to insure a snug fit with the 688zz bearings.
The 500x750mm comes with 1 spoiler board support. Sizes with an X Axis of 750mm come with 2 spoiler board supports. Sizes with an X Axis of 1000mm come with 3 spoiler board supports. Sizes with an X Axis of 1500mm come with 4 spoiler board supports
Please see the tab 'Software' above to get an overview of the software provided and not provided with the machine.
To complete the build of this Hobby CNC machine, only simple tools are needed, Allen keys, Screw drivers, and Pliers.
By default the full kit doesn't come with a router mount. The Z-Axis extrusion is 60mm wide, with 3 slots at 20mm spacing, to mount whatever attachment you want, may it be a Spindle, Laser, or something else.
There is two options for the Router Mount. The first is the router mount only, this is a solid aluminium mount designed to work with any 71mm outer diameter router. This includes all the hardware needed to mount it to the machine.
The second option includes the router mount above, plus a DeWalt D26200 as seen in the pictures. This is a 900W Input (620W Output), 16000-27000rpm manual speed compact router, with a 1/4” Collet. Please note we only supply the 240V 3 Pin UK Plug Version.
CNC Machining is naturally a messy job, containing and removing the cutting debris with a dust shoe will keep the machine clean and allow it to run much smoother. A cleaner machine will also mean the mechanical parts will wear significantly less. The dust shoe will also create a vacuum environment for the cut, removing chips and thus removing heat, this will improve cutting performance and increase the milling bit life span. If you are considering to use the OX CNC Machine in a production environment we would highly recommend using a dust shoe.
Our split-shoe is specially designed for smaller CNC Machines like the OX, and will clamp around any 71mm outer diameter router, this includes the DeWalt D26200. It has a clear arcylic plate that allows the cut to be viewed during operation, and a 2” brush that magnetically attaches to the upper plate. The removable brush ring allows for quick and easy access to change the bit. The vacuum outlet is 2-1/2”.
The OX CNC Machine has the following software work flow: CAD → CAM → G-Code Sender.
The G-Code sender takes the file produced from the CAM Software, and sends it to the machine via USB. In addition you can also jog the machine, enter manual commands, and configure the firmware within it. We recommend Universal G-Code Sender, this program is freely available and our instruction manual covers downloading and installing it. Whatever software option you choose (Even 'None') this is included.
CAM Software produces G-Code tool paths from your CAD designs. We do not provide CAM Software with the machine, unless chosen as an option. We have tried nearly all the offerings available, and have settled with the software made by Vectric. It is powerful software, but very easy to use. Please see the tab 'Software' above to see a breakdown of the different versions available. However the OX is fully compatible with any CAM Software which can export G-Code, this includes free ones like Fusion360 and Sketchucam.
500 x 756mm
750 x 756mm
750 x 1006mm
1000 x 1006mm
1000 x 1506mm
1500 x 1506mm
320 x 525mm
570 x 525mm
570 x 775mm
820 x 775mm
820 x 1275mm
1320 x 1275mm
Motors - 123.4N.cm (177.5oz.in) NEMA23 Stepper Motors X,Y & Z.
Wheels - Super Hard Polycarbonate Xtreme Solid V Wheels
X & Y - 6mm GT3 Timing Belts
Z - 8mm Tr8*8 4 Start ACME Lead Screw
Plates - Machined 6082 Aluminium, Black Anodised.
Extrusions - V-Slot Extrusions, 20x80mm Y-Axis. Dual 20x60mm + 20x40mm X-Axis.
Controller - USB CNC xPro V3 Controller, GRBL Firmware, Dual Y-Axis Stepper Drivers.
Power - 24V 350W Output, Switchable 110-220V Input.
Software - Universal G-Code Sender Windows/Mac Java Based.
We would like to give a big thank you to Mark Carew and Openbuilds part store for designing an excellent Hobby CNC Machine and V-Slot system, which they have allowed to be freely shared, remixed, and sold. We would also like to thank the Openbuilds and wider community for sharing their upgrades to make the OX even better.
To clarify the Z Travel distance, this is not the max cutting depth. Z travel is the distance downwards it can travel before hitting the spoiler board supports.
This kit has a Z travel of 69mm, if you had a 12mm spoiler board, this will reduce the Z travel to 57mm. In this case 57mm is maximum thickness of material that will fit on the machine.
To calculate the max cutting depth for a chosen piece of material it is:
Max Cutting Depth = Z travel – Material Thickness
For instance a setup with a 12mm spoiler board, the max Z travel is 57mm, if we wanted to cut into a material 30mm thick the max cutting depth would be:
Max Cutting Depth = 57 – 30 = 27mm
This means with a 30mm piece of material we would not be able to cut the whole way through.
The max thickness that can be cut the whole way through is half the Z travel. So with a Z travel of 57mm, we could cut the whole way through a piece of material 28.5mm thick.
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