Yes, that's right.
That is my idea: use the DVD laser to expose or burn the resist off. I
don't know if I paint with some black ink a copper board and try to
get off the ink burning it with the laser.
A CO2 laser is very expensive for a student hi hi
--- In Homebrew_PCBs@yahoogroups.com, Steve Wiseman <sjwiseman@...> wrote:
>
> I think Juan's contemplating burning the resist off, rather than
exposing it.
> I've got a 25W CO2 laser marker, (google synrad fenix) but no etching
> gear here. If anyone wants to send me a bit of photoresist board, I'll
> blast a few test images onto it at varying powers and send it back to
> you for etching. Working area is credit card size, spot size is 180uM.
> It'll almost certainly burn away the etch resist - but I don't know if
> it will do odd thermal stuff to the remaining areas, and what the
> effective resolution will be. It'll definitely not burn the copper,
> with a puny 25W.
>
> ('Here' is Cambridge, England)
>
> Steve
>