Re: Dumb question re: processing 4x5

On 10/21/2007 2:42 PM Richard Knoppow spake thus:

> "darkroommike" <darkroommike@[EMAIL PROTECTED]
> wrote in message 
> news:13hmulpn4gn8ncb@[EMAIL PROTECTED]
 >
>> Depends on the volume but for trials (at least) get a 8x10 
>> paper drum, one that has dividers to separate 4x5 sheets, 
>> load it in your changing bag (note you may need to invest 
>> in a larger bag) and process on the tabletop in room 
>> light.   i use a Unidrum and Uniroller for roll film and 
>> use an Omega Drum (Simmard) on the same base for the 
>> little sheet film I do.

[snip]

>      I also use Unicolor and Besler print drums for sheet 
> film. I have found that I can get "bromide streaks" on 
> occasion if the drums are rotated using the Unicolor motor 
> base unless they are taken off several times during 
> development and agitated sideways. Evidently there is not 
> enough turbulance in the flow of the developer to move the 
> reaction products away from the development sites in the 
> long direction of the drum. I've had this problem 
> specifically with Rodinal. Its likely it may not happen with 
> other developers but its worth beign aware of.

For what it's worth, I also use the Unicolor drum with the same motor 
base, and I've *never* gotten development streaks, but I've never used 
Rodinal in the drum. Just D-76, Microdol-X and HC-110, all without any 
problems.