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View Full Version : Machines, rust and darkroom chemicals ?



nheng
08-14-2007, 07:19 PM
Do any of you guys keep a darkroom on the same floor as your machine tools? I'm concerned about rust from any of the acid or base mixtures. Humidity and rust are well under control but wonder if the location of the darkroom wet side needs to be re-thunk.

IOWOLF
08-14-2007, 08:44 PM
I know you don't make Mercury sulfate in a home shop.
DAMHIK,(Don't Ask Me How I Know).

chipmaker4130
08-14-2007, 10:46 PM
I'm no chemist, but unless you're storing the darkroom stuff in the lathe cabinet or something like that, there is nothing to worry about. If it isn't rusting YOUR pipes, it probably won't affect your machinery.

sch
08-15-2007, 02:41 AM
I have the residue of a darkroom in the back of the basement
but it has been inactive since decent digital cameras came
into use. Only significant acid is diluted acetic for fixation
purposes and it is a low risk IME. None of my wood cutting
tools ever rusted up. All the leftover chemicals I have have
been in bottles for years. Since most of the darkroom
chemicals have a limited shelf life (in active use) typical
practice is to replace them in jugs with O2 displacement for
the developers for best preservation, others to store so
dust and bugs don't start to float around in the trays.
If you stick to that regimen you should have no trouble.

Dragons_fire
08-15-2007, 04:58 PM
i had my etchants for making PCBs on the same desk as my scroll saw for a while... the scroll saw was rusting slightly, and i realized that its probably from the chemicals.. when my saw is on, it shakes the desk and stirs up the chemicals. im also guilty of forgetting to put lids on my chemicals after im done etching...