mario_mab Posted June 12, 2001 Share Posted June 12, 2001 Hello, <p> I'm trying to get info about the "JOBO Sheet Film Tank System" that interests me. Though, I don't intend to use this system with any automated rotary system. Do you think that it is possible to use those tanks (2551) by inversion intermittent-agitation as I would with the roll film? Is there a manual processing system that let be agitate at intermittent intervals? <p> Thank you. Link to comment Share on other sites More sharing options...
toeknee Posted June 12, 2001 Share Posted June 12, 2001 Mario, <p> I Use a Jobo tank to hand develop my sheet film. Yeah it takes a lot of chemistry (I fill it up and develop only 4 sheets at a time), but chemistry is cheap (and re-useable). I agitate for the first minute, then 5 seconds every minute thereafter. <p> Tony P. Link to comment Share on other sites More sharing options...
mario_mab Posted June 12, 2001 Author Share Posted June 12, 2001 Tony, <p> How much chemistry do you need to put in it?What about the uniformity of the development� are you happy with it? <p> Thank for you time.. Link to comment Share on other sites More sharing options...
toeknee Posted June 12, 2001 Share Posted June 12, 2001 Mario, <p> I fill my 2500 series tank until it's almost full - about 1.4 liters. With the exception of the devoloper, I reuse all the other chemicals. <p> Development has been uniform, and I'm more than happy to be able to develop in the light. <p> Cheers,Tony P. Link to comment Share on other sites More sharing options...
charlie_strack Posted June 12, 2001 Share Posted June 12, 2001 I do exactly as Tony, and it takes 1.4 liters. I've got a 2-reel system, and only load the bottom reel. That way the chemistry has space to mix when I invert. 1.4 liters covers the bottom reel completely. <p> I get very consistent results following this process. I'm now experimenting with 2-bath (divided) developers so I can re-use the developer. Link to comment Share on other sites More sharing options...
charlie_strack Posted June 12, 2001 Share Posted June 12, 2001 Forgot to add, though, that I do 6 sheets at a time. Link to comment Share on other sites More sharing options...
claudia_p Posted June 12, 2001 Share Posted June 12, 2001 Tony and Charlie, <p> Can I ask you which times you use for your developement when you agitate your tank by hand. Are you using the times quoted for small tanks or sheet film? <p> thank you, Claudia. Link to comment Share on other sites More sharing options...
toeknee Posted June 12, 2001 Share Posted June 12, 2001 Mario, Claudia, <p> I used the manufacturer's recommendation for sheet film as a starting point, and worked from there... <p> Not that I'm displeased with my results, but if I had the money I would purchase the double reel tank like Charlie (I use double reels for my 35mm and MF development, and should be consistent). <p> Cheers, Link to comment Share on other sites More sharing options...
toeknee Posted June 12, 2001 Share Posted June 12, 2001 Sorry, forgot to add that I process 1 sheet of negatives (1 roll 35mm, 1 roll 120, 4 sheets 4x5) at a time. Link to comment Share on other sites More sharing options...
david_willis Posted June 12, 2001 Share Posted June 12, 2001 I use one too. Mine holds a single reel, and I develop 4 sheets at a time and use 1 liter of chemistry to allow some air space for better mixing during inversion. <p> I shoot Tri-X at 200 and develop in HC-110 dilution B for 6 minutes at 68 degrees with constant agitation. I roll forward 10 times, backward 10 times, invert twice, and slap to dislodge bubbles. Works great for me. I use the developer one shot, but reuse the other chemistry. <p> Dave Link to comment Share on other sites More sharing options...
eric_boutilier_brown2 Posted June 12, 2001 Share Posted June 12, 2001 Hi, <p> I've used the Jobo Reels and tanks for close to a decade now, in various forms. I have done manual processing with a 12 sheet tank (two reels) on a Beseler drum (with the alternating rotation), and now use the Expert Dryms. With the sheet reels, I used 24 oz of chemistry for 12 sheets, or 2 oz each. Now I use Xtol in the Expert Drums, so I have to use more chemistry, but the results are worth it. I have never tried intermittent agitation, as the drums are made for rolling - I'd recomend picking up a Beseler roller (with alternating rotation) and take advantage of the constant rotation/agitation. Link to comment Share on other sites More sharing options...
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