[pure-silver] Re: 8x10 condenser enlarger head design

John wrote:

I am new here. I followed Mr. Knoppow to here from usenet. (Hello, Richard!)
I have been rebuilding a Saltzman 8x10" enlarger which is missing a light source. The condensers are in good condition, I prefer condenser enlargers and I'd like to have an appropriate hot head made. (I am very fortunate to know an excellent sheet-metal fabricator who makes custom devices for our local composites-material factories.)
I have no clue as to the design of the original tungsten source head. I have Focomats (I and II) and their design uses a single frosted bulb and a matte-silver reflector. Is there a single, large-enough bulb to work for an 8x10" enlarger? (The condensers are 14" in diameter). I have a hot box originally designed to light natural specimens; it uses six tungsten bulbs. Would it make more sense to use multiple bulbs? 

Can anyone point me to a good source for head designs?



Ansel Adams once converted a large (11x14"?) view into a projection
enlarger. He needed a light source and made it with 36 small floodlight
bulbs. He later modified it to take a 2-tube grid light.

It is pictured on pages 14, 27, and 28 of his book, "The Print" 1983 edition.
I do not suppose you would wish to copy this, but the ideas might be
helpful. Read the adjacent text, though.

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