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#11
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Don't totally agree
The width of the slot is a significant characteristic The narrower the better - provided you can manage a nice rough surface texture on the opposing wall. What you need to do is achieve turbulent (as opposed to laminar) flow over the entire surface of the print. That way, you bring fresh clean water into contact with the entire surface of the print and so maximise the chemical gradient between the fixer saturated print and the clean water. There are practical limits to how narrow the slots can be - as you may need to get your fingers in there to retrieve a print. It also helps if the partitions slide out from the washer completely - when a print attaches itself to one of the walls it can be surprisingly difficult to dislodge without removing the entire thing from the tank and peeling the print away. NOVA use a surface called "Crushed Ice" to achieve the turbulent flow If you can only get hold of smooth sheets of plastic then small dabs of smooth headed Araldite every 1cm will do a reasonable job of acting as turbulators. Martin |
#12
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I agree strongly with the comments about a non-smooth surface to the slots. My Summitek washer came with smooth dividers. It was ok when lowering 8x10 prints on a single Nova clip, but when I did 12x16 prints with two clips it became very difficult to guide the print into the slot. I purchased textured dividers and it made a huge difference.
Also, I'm sure it assists in ensuring even washing on both sides of the paper because it breaks the "vacuum" which can exist when two large flat surfaces are together (paper + divider). |
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paper, slottie, washer |
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