Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

> >I've always used the black light bulbs [snip]
> >
> >btw - for collimation, my box is all white inside instead of
> >aluminum foil. I think this works well to even things out.
>
> Evenness of illumination is not the same as collimation and
> yours is diffuse illumination, more or less its opposite.

Collimation is light just coming from the direction of the source.


I use MG Chemical's 600 series boards Positive type resist. They list
wavelength to be 375nm I use the BL Blacklight lamps.



Ben