Re: Stainless Steel & HIE?

["Joseph O'Neil" <joneil@xxxxxxxxxxxxxx>]

At 06:52 09/12/97 -0500, you wrote:
>Willem-Jan Markerink wrote:
>> Would this 'thin film' argument apply to HIE as well?
>> I do keep steel reels around.  They can be reloaded wet (something
>> that was necessary in Process E-2, back in the 1960s) and can be
>> loaded with film that won't go on plastic reels because it is too
>> thin and flimsy (an occasional problem with Tech Pan) or has
>> mangled edges.
>
>I've developed a zillion rolls of HIE and half a zillion rolls of TP with
my Paterson
>reels without problems.  The only difficulty I've read comes when the reel
is not
>sufficiently washed after useage.  This can cause the film to catch while
loading. 
>Otherwise, I've not encountered the above situation.

The original posting was from Michael Covington, (who is very active on the 
astro-photo mailing list).  Michael's experience with tech pan would include
film that has been hyper-sensitzed by baking in forming gas.  (Tech pan not
treated this way is almost useless for astro-photography).

Once "hypered" tech pan can be somewhat brittle.  Another problem is because
 it is so dry (part of the hypering process is to force water out of the film
emulsion), it becomes very vulnerable to static electricity.  I've had this
happen to me with hypered tech pan and plastic reels.  As a result, many 
astro-photogrpahers (not all) perfer SS over plastic when developing 
hypered tech pan.

joe

http://www.multiboard.com/~joneil

 
http://www.multiboard.com/~joneil
B&W, LF photography, 
...and a picture of my psychotic cat...
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