[alt-photo] Re: Cyanotype Light sources

[productions at johnesimmons.com]

I use them for printing albumen, and they work well, though they are slow
- sometimes an hour exposure.  I use six in a box about 30x30cm.  They are
very close - maybe a cm - to the paper.
juan

> Hello, friends
>
> I´m trying get a lightbox to make cyanotypes (I need work at night) and I
> read that this kind of 27 W Compact Fluorescent Black Light works well
>
> http://i203.photobucket.com/albums/aa61/PatrickDommarco/DSC01279.jpg
>
> I´d like to know:
>
> 1) They really work?
> 2) How many bulbs I have to put in a 30x40 cm wood box (to print 20x30 cm
> works in a 30x40 cm paper) to get a not-so-fast exposure? I don´t mind
> get about 20min exposure.
> 3) What the best distance between these bulbs and the print?
> 4) Any other recommendations to build (or improvise) a cheap light source
> (not so cheap here in Brazil).
>
> Ps: many printmakers talk about UV facial sun bed unit. Would be great,
> but it´s TOO expensive buying and shipping to Brazil (almost 4 times
> more).
>
> Hugs 4 all!
>
> Rafael
>
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