Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Lez <lez.briddon@...> wrote:
>
> Lol I can see I'm going to have fun over the next week or so with this
> new plotter........
> 
> One idea that has just comeint my head was to cover the board with a
> resist and build a scratching pen from one of the empty pens and a
> diamond tip from one of those emergency window hammers you see in
> busses / trains etc. can be bought very cheap from one of  those $1/£1
> shops that seem to spring up here and their.

Search the archives for "Scratch and Etch".

Why use an emergency window hammer? You can buy replacement tips in
carbide or diamond tip for metal marking pens. Coat the board with
metal marking fluid, it's a laquer coating. Wait for it to dry
sufficiently or it tears rather than scratches.

Did you get the plotter yet? Did you make sure it's the serial port
version?

Steve Greenfield