I wish to use a small pcb router that normally takes gerber files from PCB design software to do some simple 2D work from DXF data. Just need tool paths and drill centres.
Any body know where I could get DXF/Gerber conversion done for free?
You may have difficulty going in that direction. Gerbers can make shapes based upon a layered approach, e.g., create a circle by starting with a square, then laying a bunch of other squares on top of it until the original approximates a circle. DXF is point-/line-based. I'm sure there are crude translations, but that's not the norm.
I believe LinkCAD can do it but I haven't used that program in several years. As Dan pointed out it may not be a direct conversion; you may need to translate DXF to ??? to Gerber.
Maybe you can look at Eagle, a free electronic cad software... it should be possible to import DXF, and then create Gerbers.
For sure it' doable with Altium, but it's not free, I don't know for Eagle, or other free ecad
It would be a semi automatic process, if he don't need net name the task is pretty easy, no need to do the tracing, just import on toplayer and bottom layer. I imagine the the PCB is pretty simple, in order to build it entirely with a milling machine.