Hi, I have a 2820 test drum and recently read some discussion about developing film in print drum (http://www.largeformatphotography.in...=25646&page=2). I tired using it to develop films, but sometime my wing clip will fall off during developing. It also blocks chemical from reaching the spot with the clip and cause a small dot on the film. Anyone has any idea on developing without the clip? They wrote something about a "blanket", but I am not sure what it is.
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