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

"Harvey White madyn@... [Homebrew_PCBs]"
<Homebrew_PCBs@yahoogroups.com> writes:

> Variables on toner adhering to board are cleanliness (mostly oils),
> non sticky toner (too low temperature), too little pressure (no
> adhesion), too much pressure (spreading), too hot (spreading).

Also too smooth (sanding to too-high a grit, or not scuffing)

Toner won't stick to a mirror-finish copper as well as it will stick to
a roughed-up copper (or a "rough" paper).