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Photo Forum / Film Photography / Darkroom / February 2004

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Washing in print drums?

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Nick Zentena - 22 Feb 2004 15:11 GMT
     Is there some sort of standard method for washing in a drum? I've
just been filling the drum,dumping and repeating. Is that it? I'm only using
the drums for RA-4.

   Nick
Jim Phelps - 22 Feb 2004 19:14 GMT
>   Is there some sort of standard method for washing in a drum? I've
> just been filling the drum,dumping and repeating. Is that it? I'm only using
> the drums for RA-4.
>
>     Nick

Nick,

  That's the accepted practice.  With the Jobo's and the lift, you have to
wash this way (it also cleans the lift paths).

  FWIW, I usually take the time required and divide by four.  That's the
number of changes of water I'll use.  For instance, with RA-4, they
recommend a two minute wash (Tetenal).  That would be 4 - 30 sec washes.  I
also do not include drain time in the 30 seconds (I let the drum rotate for
the full 30 sec).

Jim
Nick Zentena - 23 Feb 2004 13:08 GMT
>   FWIW, I usually take the time required and divide by four.  That's the
> number of changes of water I'll use.  For instance, with RA-4, they
> recommend a two minute wash (Tetenal).  That would be 4 - 30 sec washes.  I
> also do not include drain time in the 30 seconds (I let the drum rotate for
> the full 30 sec).

 Hi,
    I'm basically doing that. The problem is I'm doing it by hand. I may be
shaking the drum too hard because I'm getting some damage to the corners. It
doesn't happen every time but of course happens with the good print-)

    Thanks
    Nick
Jim Phelps - 23 Feb 2004 15:21 GMT
>   Hi,
>      I'm basically doing that. The problem is I'm doing it by hand. I may be
[quoted text clipped - 3 lines]
> Thanks
> Nick

Nick,  What kind of drum?  Jobo, Unicolor, et al...  The only time I've had
damage to corners (jobo and Unicolor, but more so with the Unicolor) is when
it was difficult to load (not dry enough).  I'd think you'd really need to
give is an almost impossible shake to damage the corners...

Jim
Nick Zentena - 23 Feb 2004 16:48 GMT
> Nick,  What kind of drum?  Jobo, Unicolor, et al...  The only time I've had
> damage to corners (jobo and Unicolor, but more so with the Unicolor) is when
> it was difficult to load (not dry enough).  I'd think you'd really need to
> give is an almost impossible shake to damage the corners...

 I've been using the smaller Jobo drums. The type based on the 1500 series.
All I've been doing is 5x7s and the odd  8x10 so the small drum would seem
perfect. I can hear the 5x7 slide around inside the tank. 8x10s stay put.
Maybe it is my handling of the paper. Should have seen the problems I had
with the roll paper. Took me three sheet until I could figure out which side
was up in the dark-)

Nick
LABFIX 2 - 24 Feb 2004 13:05 GMT
1500 series drums are not designed for paper processing. The 2800 series are.

>  I've been using the smaller Jobo drums. The type based on the 1500 series.
>All I've been doing is 5x7s and the odd  8x10 so the small drum would seem
>perfect. I can hear the 5x7 slide around inside the tank. 8x10s stay put.
>Maybe it is my handling of the paper.
Nick Zentena - 24 Feb 2004 13:17 GMT
> 1500 series drums are not designed for paper processing. The 2800 series are.

 Are you saying the 1526 paper drum isn't designed for paper? Then why does
Jobo call it a paper drum?

    Nick
 
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