diff --git a/README.md b/README.md index 1f8bafb..c46df87 100644 --- a/README.md +++ b/README.md @@ -309,7 +309,7 @@ the developer. Framed hangers and the Yankee tank insert all showed bromide drag effects in varying and unpredictable ways. My theory - which I cannot prove - is that turbulent effects and developer - trapping is taking place along- and under the hangar frames/insert + trapping are taking place along- and under the hangar frames/insert supports and promoting bromide drag. * Semistand development is at lower risk of this, but still shows @@ -603,22 +603,6 @@ the film vertically well above the bottom of the tank. -### Update 1-9-2022: More On The Use Of Reels - -Per the previous update, there is (at least in my experience) -compelling evidence that you reduce the risk of bromide drag when you -let gravity pull away the development artifacts from the film. With -reels, this means suspending them off the bottom of the tank a bit. - -I've been using the faucet adapter that comes with the Kodak Tray -Siphon to do this. I stick the narrow end into the bottom of the reel -and slide the lift rod through it. This raises the reel off the tank -floor about 1 1/2 inches or so. You could also probably use a small -inverted funnel to do this. Another possibility would be to get an -appropriate sized rubber stopper and drill a hole through it to make -room for the lift rod. - - ### Update 4-3-2022: Old Tri-X 220 Rollfilm I acquired some old TXP 220 that had expired 8/1992. After the good @@ -670,6 +654,31 @@ avoid shooting anything of consequence in the first few frames. +### Update 4-24-2022: More On The Use Of Reels + +Per a prior update, there is (at least in my experience) compelling +evidence that you reduce the risk of bromide drag when you let gravity +pull away the development artifacts from the film. With reels, this +means suspending them off the bottom of the tank ~~a bit~~ a fair +distance. + +After some further testing, it's pretty clear that the reels need +to be well above the bottom of the tank. The bromide artifacts +seem to sink there and you want the film well clear of them. I'd +suggest finding a way to suspend your reels so that the lowest +part of the reel is 1-2 inches off the bottom of the tank. + +I've been using the faucet adapter that comes with the Kodak Tray +Siphon to do this. I stick the narrow end into the bottom of the reel +and slide the lift rod through it. This raises the reel off the tank +floor about 1 1/2 inches or so. You could also probably use a small +inverted funnel to do this. ~~Another possibility would be to get an +appropriate sized rubber stopper and drill a hole through it to make +room for the lift rod.~~ I found that the usual rubber stopper does +not lift the reel off the bottom of the tank enough to consistently +avoid bromide artifacts on the bottom edge of the film. + + ## Copyright And Use All content here is Copyright (c) 2021-2022 TundraWare Inc., Des Plaines, IL USA