For those of you trying to make your own DIY 3D milling machine, take a look here, a great resourceful site for that.
The CNC project also included the design and construction of three independent forced air cooled twenty six volt five ampere power supplies, Three MOSFET’s based unipolar chopper drive circuits, A Digital high speed ISA bus interface, several Analog to Digital and Digital to Analog boards, Time base circuitry, and all of the associated wiring and circuit board construction as we
