Originally Posted by jnanian
I should have only bleached a couple last night - and then changed the bleach today. It actually was the natural way to go. but I got "greedy" - wanted to do all in one batch...
the trouble is, that I sort of have to guess when to change the bleach - I don't have a test thingy....alas..
about the bleach.
I use the one described in Silver Gelatine..
(15g potassium bromide
15 g copper sulphate
1g potassium dichromate
for 1/2 liter water..)
then dilute 1:3 for use.
Gene laughter, who is the expert in the area (I think) uses:
an I quote:
70 ml 10% Copper Sulphate
70 ml 10% Pot. Bromide
30 ml 1% Pot Dichromate
Distilled water to make one liter
This will bleach/tan about ten 8 x 10 inch prints with a one inch safe edge = 6 x 8 inch image. If the images are low key it will bleach only eight prints. If high key, twelve prints. I bleach for eight minutes per print with constant agitation. Wash 10 minutes. Fix for three and a half minutes. I use a 10% fix made from pure hypo crystals. Wash for 15 to 20 minutes. Air dry overnight.
Other bleaches are news to me as I am sort of a beginner as of yet..
best of luck
Any old bleach won't work for bromoil. Copper sulphate must be used. It combines with the pot. bichromate to accomplish the selective tanning.
"Gene laughter, who is the expert in the area (I think) uses:
an I quote:"
I'm Gene Laughter and I don't claim to be "the expert!" I have inked a lot of bromoil prints and I have made a lot of mistakes along the way. I think I'm beginning to get the hang of it! Cheers, Gene
thanks gandilfi + gene
i forgot about the tanning part !
- - john
hi Gene - maybe you don't claim to be the expert - but to me you are....
Originally Posted by Rolleigene
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How hot is your soak bath? When my bleach is too strong, I heat the bath to get the swelling to the correct point. Maybe you need to use a cooler bath as not to swell the matrix to the point of the ink not sticking.
Have you seen this for reference?
And did you know Mortonsen was a teacher here in Utah and was run out of town for photographing students in the buff?
Originally Posted by Robert Hall
I teach students, and on occasion I take pictures of them...
but I havn't been run out of town yet...
about the bleach. I am carefull not to use hot bleach or rinsing water as I am using liquid emulsion as base...
and I don't want to melt the emulsion..
I threw out all the mistakes as they are quite useless (alas), but I have since done another batch of 25 images and bleached/inked them without problems.
actually I think Bromoil is quite easy, as long as I stick to liquid emulsion (from FOMA)
I still have to learn the bromoil of "normal" papers..... have no clue..
my girlfriend is trying out the oilprinting, and that might be a challenge. It certainly is more difficult as there are so many variables to get right.
(amount of gelatine - amount of p.dichromate - how long to expose and so on..)
but I am having fun.
(except that I havn't any more emulsion........)
Bromoil Show and Two Day Seminar
[COLOR=DarkOliveGreen]There will be a month long show, [COLOR=Blue][COLOR=Navy]"The Art of Bromoil"[/COLOR][/COLOR] at the Plant Zero Gallery in Richmond, Virginia opening on October 28. The show is sponsored by the International Society of Bromoilists and will feature the work of about 25 artists from around the globe. All in all there will be approximately 150 bromoil prints hanging in the gallery. There will also be a Historic Section of the show with bromoil prints by masters from the past. The two day seminar (Oct. 28 and 29), [COLOR=Navy]"Hopperfest V,"[/COLOR] is non-profit and there is a $50 registration fee to cover expenses. There will be a number of Bromoil Demonstrations for beginners and advanced bromoilists. For more info, contact me: [COLOR=Navy]firstname.lastname@example.org[/COLOR][/COLOR]
Last edited by Rolleigene; 08-17-2005 at 04:53 PM. Click to view previous post history.
GOOD LUCK with it.
Originally Posted by Rolleigene
too far for me......
Emil -- It's just a short hop across the pond! :>)
Before I was wired to the internet I hopped across the pond to visit Norman Gryspeerdt and Maija McDougal a couple of times. This trips were a quest for bromoil knowledge. The most important thing I learned was that brushes weren't all that important. Gryspeerdt made his from cheap artists brushes and Maija still uses shaving brushes trimmed to a stag foot shape.