Homebrew PCBs

> Hi Folks,
> I'm mostly a learning lurker on these tech exchange lists, 
> but the recent UV source discussion has stimulated a question 
> I've been wondering about. I need a really compact UV source 
> for a very portable exposure unit. Anyone know of any success 
> using an array of UV LEDs as a UV light source for exposures? 
> LEDs are pretty directional, so are fairly well collimated as 
> is. And in their visible light forms, bright enough to use in 
> traffic lights. But can these UV LEDs put out enough light 
> energy to react the photoresist? Anybody have experience or know?
> 
> -Karl in Kalifornia


They're the wrong wavelength, so they don't work anyway.

Tony