Originally Posted by schrochem
I rinse in the helper tray and then a horizontal tray inside the darkbox, then wash after fixing (ammonium thiosulfate, not KCN) in the above tank outside the box. So far, no problems with scratching. The tank shown will do full-plates in the long direction and 1/4-plates in the short. They double as storage boxes. Wish I had more of them built when I first thought of it. Apparently business is good now at the plastics vendor. They grooved the first batch for me from a cutoff for about $75. Now they want nearly a grand to groove a 4x8.
So, I use these in the field for the wet process and then build wooden boxes for plate storage.