Homebrew PCBs

Hi All,
        I sell plans for two kinds of CNC mills that have been used
for milling and drilling PCB. They both use Derin Gibs and Gibs.
Neither uses homemade DRILLED DELRIN bushings. Gibs and Jibs can be
adjusted at any time so there is no play unlike homemade bushings that
may be too loose or bind . Both machines can be built using simple
hand tools. Both machines can be built for around $100 minus
motors-drivers and software.

                                          John