I have one that came with some kind of grommet piece installed in the fill hole that was hard to see and which made it very difficult to fill but once I removed it, it worked fine. Could that be what's going on?
On Mar 10, 2022 3:24 PM, Ugo Bo <[email protected]> wrote:
Many thanks to everybody.
After my last post I got my hands on another "new" Lomo (UPB-1A) and it actually works differently from the other "new" one: the lid comes on and off much more easily, there's a wider gap to leave liquid to fill the tank quickly, like in the "old" model. Now development comes even as expected.
So seems working tolerances were quite shabby.
I think I'll follow Friedemann advice for the other tank: I'll rework the center of the bottom spiral a bit to keep less distance between it and the tank's bottom.
About agitation (up and down or gently rotation) I think is more a matter of religion: I'm always have been of the up and down church, and I'm not concerned about light spill, since I work only with a dim red light in my darkroom, not directly over the tank.
Just to let you know: the project we are working on had to start with Orwo UN54 stock, but since we weren't able to buy anything yet we started with the stock we had: double-x that we decided to unconventionally try as reversal (PQ-Universal + Permanganate bleach). It came not so bad, actually (after I solved the tank issues).
Best
LivioIl giorno gio 10 mar 2022 alle ore 09:15 Adrian Cousins <[email protected]> ha scritto:I’ve had that issue with my first (used) UPB-1A but I think it was possibly something to do with the smaller components - screw, spacer etc coming from a different tank (possibly a previous version), I bought a couple of brand new tanks and I’m able to move the spiral up and down as well as rotate on both of them with no problems, the lids are slightly loose so you can lift them up on one side to let air in, this allows you to pour chems in and out quickly_______________________________________________On Wed, 9 Mar 2022 at 13:44, Ethan Berry <[email protected]> wrote:I have sometimes filled the tank through the drain hose using a funnel at the end of the hose. Drain it as you normally do.The "old" tanks that I have usually hold about 1,800 ml. I would guess that the "new" tank holds slightly less.If the spindle won't go up and down, perhaps spinning it would work for agitation.Ethan BerryANYEYE Film LabMontserrat College of Art23 Essex Street,Beverly, MA 01915_______________________________________________On Wed, Mar 9, 2022 at 5:23 AM Ugo Bo <[email protected]> wrote:Hallo everybody
I've been happily using a 50ft Lomo tank for years, mine is the "old"
model (UPB-1 - version 1). Now a friends of mine bought the "new"
model (UPB-1A or version 2) and I'm teaching him how to use it.
As some of you probably now, the "new" one has a lower body than the
"old" one (70mm against 78mm, here's the difference explained:
https://sites.google.com/site/olexserviceskinor/processing-of-a-cine-film-in-home-laboratory/spiral-processing-tanks/upb-1-upb-1a-spiral-tanks?authuser=0).
In the past I processed only super8 also with a "new" model, and it
worked fine, but now, processing 16mm, I realized that a problem
arises: the "new" one leaves a very tiny room for liquid to pass, so
it takes a very long time to fill the tank, a problem that I never
experienced with my "old" one. Long filling time makes developement
uneven.
When processing 2 x 16mm the problem is even worse: the gap is really
thin, liquid takes ages to enter, and is also impossible to move the
spiral up and down (my way of agitation).
I thought of filling the tank first with liquid, and then dropping the
spiral in the dark in the liquid, but is quite an hassle.
Did you have the same issue? And what's your trick?
Best
Livio
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