Thus, a new project is formed. I don't have a lot of time or motivation these days and so I wanted to be smart about getting a cheap solution up and running with minimal time / resources. I decided to go with a time tested design called the Rockcliff. It's not an open source design, but the plans only cost $20. They are well worth it! Here is an animation of the design I went with:
It is mostly made out of 3/4 inch MDF and 5/8 inch steel rod, which cost $60. You will also need some bearings, motor couplings, stepper motors, and driver boards costing upwards of $400. However, considering I have a 3d printer I was able to print the bearings and couplings. Here is video of what the printed bearings look like:
CNC parts printed on a RepStrap from gavilan on Vimeo.
I am also borrowing the driver boards from my printer while I mill another set.
In total, I think this CNC will cost me around $240. Not bad for 0.003mm precision.
Here is a picture of the mill as it stands.
More to come on my goes at milling PCBs on this Rockcliff.