Before revision: Etching, simplified animation of etchant action on a copper sheet with mask Wet etching Radiation hardened die of the 1886VE10 microcontroller prior to metalization etching Radiation hardened die of the 1886VE10 microcontroller after a metalization etching process has been used
After revision: A largely outdated process that was used up until late 1980s when it was superceded by dry plasma etching.Etching, simplified animation of etchant action on a copper sheet with mask Wet etching Radiation hardened die of the 1886VE10 microcontroller prior to metalization etching Radiation hardened die of the 1886VE10 microcontroller after a metalization etching process has been used