Re: Re: stripes on HIE

[Ken Sinclair <photo1@xxxxxxxxxxxxxxx>]

HIE responds well to "gentle" agitation. However, gentle agitation for some
may be
180- 360  degree "top-over-bottom" taking about 2 seconds per. Agitation
does not mean that the user is to duplicatee the agitation technique of a
"shaken.. not stirred" martini. It only requires that fresh developing
agent  be brought into contact with the film emulsion at a fairly regular
period over a given amount of time. Excess agitation during this time has
the same effect as extending the devlopment time to produce increased
contrast/density.

It is not uncommon for "new" users to experience difficulty in processing
HIE... but then some "new" users have difficulty processing Tri-X in D76 at
1:1 due to their reluctance to practice an agitation technique that is
consistent from one processing to the next. I have a friend who "rolls" his
tank back and forth along the bench and another who agitates most of his
films by the rapid vertical motion. I prefer a gentle 180 degree with 90
degree "turn".
Spaghetti development is done in a one gallon tank (or pail) where the film
is lowered in and then drawn though the fingers (under the surface) in a
continual motion about 4 inches every second.

>What do you recommend for agitation?  I normally invert the tank 180 degrees
>10 5 seconds every 30 seconds.  Not familiar with the "spaghetti" method.

If I "read" that correctly, your inversion is for 10 seconds every 30
seconds which I would consider to be excessive.... and increase the chances
of getting "stripes".
I have seen also students twist the rod in (Paterson tanks) one direction
for a full five seconds every 30 seconds but they "forget" that that
twisting in one direction only, causes the developer to "rotate" along with
the film... and it takes a few seconds for that developer to stop
"rotating" after the film and reel has come to rest.... again an increase
in "development".

I am a believer in consistency... with whichever method you choose.

Ken

____________________________________________
The software package said "Requires Windows 95 or better".
..........So, I bought a Mac!
____________________________________________


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