Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Steve Greenfield 
<alienrelics@y...> wrote:
> I had a goofy idea once that I never followed up on. Using a camera
> strobe with the UV filter removed to expose photosensitive boards.
> The plan was to calibrate the number of flashes required. Speed
> would be an issue as the bulb will crack or explode if fired too
> often, and aging of the bulb. The plan was to use a relatively
> large strobe tube to cut down on the number of flashes required.

It's not necessarily a goofy idea -- something like it is used in 
some pattern generator machines to make chrome masks for 
semiconductor processing.

The trick would be, of course, determining the output spectrum and 
intensity and the exposure/spectral requirements (mJ/cm^2) of the 
photoresist you're using.

Jonathan