I suspect there was supposed to be an attachment or picture with your post but it doesn’t look like it is there. Not seeing the picture this sounds very similar to another Nomad user not so long ago - @FrankBuss was doing something similar - if he can chime in it might be useful. Thread here:
Given the CAD/CAM tools you will by default have on hand (Carbide Create) and not knowing your experience I would suggest using the default tools and do a 2D model to start. Once you get going and want to do something more elaborate then 3D modeling/CAM with other tools like Fusion360 will be more useful.
Hope that helps!