I just wanted to share an incident that happened to me when developing some 4x5 last night. I use my kitchen sink and I attach a temperature gauge to it that I control by moving the hot and cold knobs as desired.
I had finished with the fixing, removed the films to set aside and, and I took the combi-plan tank for the "stop bath" and attached the tubing to the bottom for a quick wash period before using the HCA.
I cheated and looked at the negatives before emersing in the wash and, like I felt when I exposed them, they were the best negatives I have yet to make with my 4x5 i.e., great densities, NO DUST on my skies!, and tack sharp focus.
Well, somehow I must have accidentally hit the cold knob and moved it to shut off because, I put the films in the tank, and my fingers touched the water last. It was hot! I yanked them out and immediately emersed them in a container of cold water and I feared a "reticulation" effect due to the exposure to hot water. I remember glancing at the temperature gauge as I yanked them out and it was reading 120 deg F! I can only believe that the films were not exposed long enough to cause problems, they came out ok.
I place the moral of the story in the absolue necessity to check that temperature gauge on a very frequent basis. That was a heart stopping incident I do not want to experience again.