or
* HCl + H2O2 / Acide chlorydrique + Peroxyde d'Hydrogène (eau oxygénée) => [http://hackaday.com/2012/04/30/etching-your-own-boards-really-really-fast/ HCl+H2O2 method on Hackaday]
=="Toner transfer" PCB etching==
http://www.riccibitti.com/pcb/pcb.htm
==Photoresist PCB Etching==
Mainly inspired from [http://sfprime.net/pcb-etching/index.htm]
===Parts===