Un-even dev, only by lack of agitation?

[RSalles]

Terry,

Yes, a Combi it's an option also, I was somehow surprised 'cause I use the Yankee there is 3 years already and never came across this type of problem before, rak dev would be an option too,

Tuco,

As I'm aware of the Combi tank capabilities, I could not take off my eyes from the Ag-O-Matic you've built. Saw the video also, just amazing,

Cheers,

Renato

[tuco]

Tuco, As I'm aware of the Combi tank capabilities, I could not take off my eyes from the Ag-O-Matic you've built. Saw the video also, just amazing,
Cheers...

Thanks. Yeah, my choice in tanks was decisively influenced by what was easily adaptable to Ag-O-Matic.

[Peter York]

Atlantaterry expressed my sentiments perfectly. The Yankee tank works well as a drying rack but not much else. When I obtained a very good scanner (Screen Cezanne) I noticed uneven development with virtually all negatives, to varying degrees, with my Yankee Tank. I switched to a unidrum (see the article on the LF Home Page) and the problem went away.

[gsinico]

Try another sistem: Jobo. Find out a tank whit reel, it holds 6 sheets of 4x5' and try rotary process. You can do it by placing the tank floating in the sink. Or you find some device joust to roll, I have a CPE Jobo. Here in Europe are very popular , I can do E6 and all kind of BN.

[RSalles]

Just an update for those who helped, I've made myself a number of BTZS-like tubes, developed 2 test negatives and all came fine till now - apart some light scratches on the acetate film side due probably by the raw material of the inner side of the tubes. But at least one walk with serious intentions in the landscape department with that great skyscapes that I love will confirm the success or not of this workflow - as soon as I have some samples it comes to this thread,

Thanks,

Renato