Hi guys could not find info on developing my 14 x 18 inch negatives I make on glass.want to use
pyrocatechin,12 grains; potass.hydrate, 30 grains; soda. Sulfite. (Anhydrous), 20 grains;
potassium. Bromide, 5 grains; and water, 10 Oz's., formula is in old book and it says will
produce rich blue black tones on bromide or chloride a bromide papers image appears in 10
seconds and complete in 2 minutes. My emulsion formulas are from 1895 to 1907 in an old manual
that's still readable. Plates are large and have designed a small apparatus to hold the plate
as I pour on the emulsion.then while still warm vibrates till emulsion level,didn't want to
spread by brush which I will probably have to use when I have to use for my positive emulsion
which goes on prepared canvas from hobby lobby which is has to also have a base for the
emulsion. I'm interested in para-catechol as its cheap cause the murals I want to make on
canvas will be 43 by 58 inches and trays must hold 3 gallons developer. Not interested in gamma
,gradation or technical problems at this time.negative emulsion will be thick I assume and
positive emulsion is different.any information you guys could suggest on catechol or its
benefits by other added ingredients to achieve better performance would sure be appreciated.
Not interested in different developer will be used for negative and positive work. Would like
input suggested so I and others who read this and want to experiment in emulsion making can go
this way .I have collected many manuals on emulsion making from the old days and only want
those who inter this field to have it simple for people on low budgets. I make bellows mammoth
wooden cameras large film holders and am 72 years old single and just an old did that combines
the old ways with some modern twists.interested only in catechin. ( takermaker )
My gray hairs from p-aminophenol
The solenoides pulls the small piece of wood it rotates towards solenoid.a small skinny 3 inch long 1/16 piece of round stiff wood stuck into rotating piece of wood pullscotter pin out of drop shutter.shutter stays open position then secondshuttEr drops.
This photo has a taller extension middle body as I use a 600 mm lomo lens for 11x14 glassplates. The previous photo with dhotet body used a 300. Mm lomo .the timer I made using a plastic sewing box from walmart.and electronics were elm 555 ice. Chips,the
This is the hood on top of camera to view image on screen .it is used instead of black cloth
