Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Addenda:

Jeff Heiss in the "photoresist application" thread mentioned the site
which recommended leaving the polyester sheet in place for a while after
exposure:

"Note that the dry film resist should be exposed with the cover
sheets on, and then held in a dark place for 15 minutes before
removing the cover sheets and developing."


http://www.electro-tech-online.com/general-electronics-chat/14427-photoresist-pcb-etching-process.html

This was from 2005, quoting extensive Riston 4713 instructions by Jon Elson:

http://pico-systems.com/PCBs.html

I recall reading this instruction somewhere else, but not in DuPont
material.

- Robin http://www.firstpr.com.au/pcb-diy/