Homebrew PCBs

On Thu, 18 May 2006, thomascouey wrote:

> This actually gave me an idea.  It might be hard to implement, but if
> you could get a thin masking material and laser etch your pattern
> through it so that it becomes something like an eraser shield (if
> anyone's familiar with the old pencil and paper drafting days), then
> use it as a mask and spray on a resist (hair spray?).
>
> Is there a material out there that would melt away at very low
> temperature, but be robust enough to handle?  And how hard would it be
> to get a powerful enough laser and build the beam splitters?  I
> suppose you might be able to adapt the scanner module from a laser
> printer...  Just thinking out loud here.  It's probably not
> economically feasible, huh?

Instead of making a mask, how about spraying a board with hairspray and
using a laser to vaporise hairspray where you want copper to remain.


-- 
David Griffith
dgriffi@...

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