[alt-photo] Re: Cyanotype Light sources

[Loris Medici]

One of the lamps below reminded to mention: Bulbs with self reflector
are better in terms of output. A big plus in case of slow-speed
sensitizer such as cyanotype!

Regards,
Loris.


2012/2/1 Gordon Holtslander <gjh at shaw.ca>:
> Hi;
>
> I use these tubes with cyanotype:
>
> http://ecom.mysylvania.com/sylvaniab2b/b2b/start.do;jsessionid=%28J2EE18927600%29ID0697479350DB00966090437548233276End;saplb_*=%28J2EE18927600%2918927650?browsername=mozilla%2F5.0%2520%2528windows%2520nt%25205.1%253B%2520rv%253A10.0%2529%2520gecko%2F20100101%2520firefox%2F10.0&browsermajor=5&browserminor=5
>
> or sylvania F40/350BL/ECO
>
> They will fit in a standard 4 ft  flourescent fixture
>
>
>
> ----- Original Message -----
> From: Rafael Frota <theesilvermtzion at gmail.com>
> Date: Wednesday, February 1, 2012 5:05 am
> Subject: [alt-photo] Cyanotype Light sources
> To: alt-photo-process-list at lists.altphotolist.org
>
>> 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