Re: 70MM Development

["David N. Horn" <dh@xxxxxxxxxxxxx>]

I had the same problem with a Patterson tank: When inverting the
tank, the reel would ride up on the spool, so the chemistry
would no longer cover the film. I solved this problem by cutting
the bottom off a plastic 35mm film can and using it as a spacer.
The same spacer works for both 35mm and 120 film.

Dave Horn

Curt Miller,EMW wrote:
> 
> Hi Group -
> 
> I had this problem, too, when I switched to inversion agitation from rotary
> a couple of years ago.  I did a lot of testing until I found the very simple
> culprit: pistoning of the reel inside the tank.  I now have a variety of
> plastic jar lids that I place inside the tank to take up the slop.  Since I
> have  5 or 6 tanks of varying capacity from 2 reel to 12 reel and I use a
> variety of combinations of film size, I have a variety of sizes of lids.
> 
> Curt