====== Diseño de circuitos impresos ======

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===== True holes cobre - cooper hollow rivet for pcbs =====

  * http://www.oz4.us/2017/07/howto-rivets-for-double-sided-PCB.html
  * http://fab.cba.mit.edu/classes/863.16/doc/tutorials/PCB_Rivets/

==== Dryfilm ====
  * https://wiki.unloquer.org/proyectos/misc/circuitos_diy

==== CNC ====
  * https://wiki.unloquer.org/proyectos/cnc
  * http://gomezgimenez.com