A Build-Your-Own Three Axis CNC PCB Milling Machine

The need for fabricating a prototype circuit arises frequently in electronics, including education and
research laboratories. In resource-poor countries in the developing world, this is hindered by the high cost
of commercial Printed Circuit Board (PCB) prototyping machines and long turn-around commercial
fabrication process. Practical, hands-on laboratory teaching and experimentation becomes necessary to
improve learning in electronics. In this project and in the following series of tutorials, a low-cost buildyour-own
(BYO) semi-automated three-axis PCB milling machine for double-sided PCB prototyping is
developed using commercial components and open source hardware and free open source software to
provide students, teachers, and engineers an understandable, affordable source for PCB prototyping. Also,
the main problems encountered during fabrication of PCB have been mentioned and the techniques used to
solve are discussed in detail.

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