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
The Full Kit includes everything needed to build a working OX CNC Machine except the DeWalt 26200 Router and MDF Spoiler Board.
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.
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 V2 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.
Once the OX CNC machine is built, it has the following software work flow: CAD → CAM → G-Code Sender.
The G-Code Sender software allows you to configure the firmware settings, move the machine around, and send the g-code job file to the machine. In the manual we cover using the very simple Universal G-Code Sender, which is a free java based program. There is other free options available such as GRBL Panel and Chilipeppr.
Other pieces of software you will need are a CAD program (Create your designs) and CAM program (Turn your designs into g-code toolpaths). Most CAM programs have basic CAD functionality built in which will achieve the majority of tasks. There is multiple free CAM programs available such as Fusion360 and Sketchucam.
We have tried nearly all free and paid CAM software available, and have found the offering by Vectric to be the best in terms of functionality and ease of use. We have partnered with Vectric to offer their Cut2D software as a bundle with our OX CNC Machine. Cut2D provides a powerful drawing and 2D machining solution with Profile, Pocket, Drill and Inlay toolpaths. You can either create designs from scratch or import CAD or graphic designs (DXF, PDF, AI, EPS, SKP) into CNC toolpaths for machining parts and components.
The Cut2D software comes in two variants, Desktop for hobby users with smaller CNC machines (under 25" x 25" or 635mm x 635mm) and Pro which has no size limit and also includes production orientated features like Nesting, Toolpath Templates, Scripting (Gadgets) and Job Setup Sheets. If you choose a machine 750x1000mm or greater you will need to choose the Pro version to take advantage of your full cut area.
With the Cut2D software you will receive 1 year of free updates, and should register your license on their website at the soonest moment to receive these.
Cut2D is Vectrics basic offering, they also offer more advanced software such as VCarve and Aspire. If you decide you want to use there more advanced software, you can upgrade your Cut2D license to their other offerings for a discounted price
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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