Etching PCB with HCL and hydrogen peroxide kobyx August 20, 2020 DIY, Electronics, PCB, Toner transfer No comments This is a DIY method of making PCB using HCL and hydrogen peroxide .Visit my Youtube channnels : Electro_Magic ; Practical Tips ; Delphi practical school The most important thing is to have good print ,... Continue Reading → Share This: Facebook Twitter Google+ Stumble Digg