[alt-photo] Re: Cyanotype Light sources

[Nelson Mark]

Rafael,

If you haven't checked out Ed Buffaloe's Unblinking Eye alt photo site, you should do so.

Here are two articles that might shed some light on your question:
Light Sources for Contact Printing (good article by Sandy King)
UV Light Box





Best Wishes,
Mark Nelson

Welcome to the Precision Digital Negatives Home!
PDNPrint : Precision Digital Negatives Forum
Mark I. Nelson Photography - Welcome

On Feb 1, 2012, at 10:56 AM, Loris Medici wrote:

> 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
> _______________________________________________
> Alt-photo-process-list | http://altphotolist.org/listinfo