Re: DIY light source for 10X10" enlarger.

On Thu, 10 Apr 2008 16:33:45 -0500, jjs wrote:

> "Stefan Patric" <tootek2@[EMAIL PROTECTED]
> wrote in message
> news:6XsLj.29114$6J3.23481@[EMAIL PROTECTED]
> 
>> JJS,
>>
>> IIRC, one of the Ansel Adams Photo Series books from years ago had
>> detailed instructions on how Adams built a diffusion head light source
>> for a horizontal enlarger made from a salvaged 8x10 camera.  [...]
> 
> Oh, darn. That means I can get off my butt, walk 10 yards and get it
> right now. I'm in the library at this moment.
> 
> Thanks, really, I didn't know he did that. Couldn't hoit! Will do.
> 
> Location/Available:    Main Library Main Collection Call #: TR145 .A38
> bk.3 Author:                     Adams, Ansel, 1902- Title:             
>            The print / Ansel Adams with the collaboration of Robert
> Baker.
> Edition:                     1st pbk. ed. Publisher:                 
> Boston : Little, Brown, 1998. Physical Details:        x, 210 p. : ill.
> ; 25 cm. Series Title:              ( Ansel Adams photography series ;
> bk. 03) General Note:           Includes index.
>    Reprint. Originally published: Boston : Little, Brown, 1983.
> Local Note    MSF FY00

If you do adapt the design and use "hot" blubs, you'll need a sheet of 
heat absorbing glass.  Place it on top of the diffuser, which I recommend 
be double flash opal glass--coated both sides--and not plastic like is 
used with cold light heads.  Opal glass diffusers better and isn't prone 
to heat warping.  That's the way did set mine up 20+ years ago.  With 
good strong air flow through the head, never had any heat problems at the 
negative.

Stef