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CNC Machine, V.2
A simple effective solution to a CNC Machine. The base is made from 2x4's and marine-grade plywood. The Y-Axis is made up of 2x 14" drawer slides. The
kind that slides either way, not the kind that only extends one direction. A coupler bolt is held in a Plexiglas stand, that has mounting holes that
attach to the cutting surface, which is a piece of hard-board bolted onto the drawer rollers. The X-Axis is supported by 2x4s bolted the the side of the base with
the same type of drawer rollers going across, and some additional supports.
All 3 Axis' use 42SH-32KCA Unipolar stepper motors driven by a Chromation Systems 3 Axis CNC Driver and 1/4" Threaded Rod with a coupler bolts for attaching to the carriage. Motor shafts are connected to the threaded rod with modified coupler bolts. Drilled a hole in the side of the coupler bolt to tighten it onto the d-shaft of the motor.
The Motors are over-voltaged to 24 volts, each has their own 15 ohm, 10 watt resistor. All the power resistors are held into an aluminum bar heat sink and mounting bracket.