[alt-photo] Re: Cyanotype Light sources

[Loris Medici]

Rafael, don't you have the usual straight / long Osram or Philips
tubes in Brasil? Generally speaking non black-light UV tubes give
better output, and they're much suitable for building exposure units.
(Takes less space / height...) Search for your local Philips dealer,
ask them bulbs which have the /05 (or /10) suffix at the end of the
product code...

Regards,
Loris.


2012/2/1 Rafael Frota <theesilvermtzion at gmail.com>:
> 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).