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Old 29th Jan 2020, 11:45 am   #25
russell_w_b's Avatar
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
Posts: 3,256
Default Re: Black oxide coating on brass

Originally Posted by emeritus View Post
Finding someone who still uses traditional processing that used fixer could be cadged from might be less difficult than trying to source toxic chemicals. The fixer should ideally be as exhausted as possible: fresh fixer contains no silver.
I still do my own black and white developing. Looks like I'll have to stop ditching my fixer-mix (Ilford rapid fixer) after about a dozen films or so and let it mature a bit! I've heard of particles of silver being visible in the bottom of folks' fixer bottles but I like to change mine when it still has some zing in it.

I'd need to develop a fair few films to acquire enough silver to blacken the gongs on my bellset No: 20 though.

Russell W. B.
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