Homebrew_PCBs

On Wed, 20 Dec 2006, Marko Pavlin (home) wrote:

> Hello!
>
> I am following this nice group for a while. This is my first post.
>
> I've got old X/Y coordinate table which used to be simple pick and place
> machine. There's no Z axis and mechanics is not strong enough for
> holding any machine with drill or mill tools. One crazy idea crossed my
> mind... what if I put one UV light source to this machine and plot with
> UV light directly to photoresist coated FR4? I can make small optical
> mask with (e.g.) 10 mils aperture, which floats on thin air blowing
> beneath the mask. It could act as single (fixed) aperture photoplotter
> for direct exposure of PCB photoresist.... Is this kind of stupid idea?
> Anyone had experience with that? Would be UV LED enough? Exposure time
> is critical here, but I am talking about PCB prototyping.

The field of homebreweing PCBs is full of nutty ideas, some of which work.
I'd call this nutty, but definitely not stupid. It's worth some
investigation to see if it's feasable.


--
David Griffith
dgriffi@...

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