Re: Columnated? or collimated light

Michael J. Coslo (mjc5@email.psu.edu)
Fri, 28 Feb 1997 11:37:19 -0500

>prints with a hand lens. However, I confess to having some thoughts about
>using a mercury vapor street light (bare bulb) for printing. Its on my
>long list of things to do after retirement.

It should work pretty nicely for you. I made one once for exposing
silk screen material, and it worked like a charm. I don't recall what the
print times were, but do remember that they were short. The only drawback
was the warmup time, and maybe heat (I put a fan in it) but that can be
worked around.

- Mike -

mjc5@psu.edu